Forza Horizon 5 Tuning Guide

Part 4 - Off-road Tuning

This part explains how to setup cars to work good for dirt or cross country racing.

 

Basically this works by altering general tunes as described in Part 2 to work better in off-road scenarios.

Generally speaking dirt tunes require a softer and more understeer setup while cross country tunes require a stiffer more oversteer setup.

Tires

Dirt and Cross Country tunes generally require lower tire pressures that provide more grip on the bumpier dirt and cross-country tracks.

Dirt tunes require higher tire pressures than Cross Country tunes as dirt tracks offer more grip than Cross Country tracks. They also require a slight understeer setup to stabilize the car on corner entry.

Cross Country tunes on the other hand require lowest tire pressures and a slight oversteer setup to improve rotating.

For dirt tunes reduce tire pressure as determined for road tunes in part 2 by 3.5 psi. To achieve a slight understeer setup decrease front tire pressure by 0.5 psi and increase rear tire pressure by 0.5 psi.

For cross country tunes increase tire pressure as determined for road tunes in part 2 by 5.5 psi. To achieve a slight oversteer setup increase front tire pressure by 0.5 psi and decrease rear tire pressure by 0.5 psi.

                            Front Tire Pressure         Rear Tire Pressure

Dirt                             -3.5 - 0.5                           -3.5 + 0.5

Cross Country          -5.5 + 0.5                           -5.5 - 0.5

Example: Car with general tire pressures 31.5/31.5

 

Tire pressures for Dirt Tune:

Front Tire Pressure: 31.5 - 3.5 - 0.5 = 27.5

Rear Tire Pressure: 31.5 -3.5 + 0.5 = 28.5

Tire pressures for Cross Country Tune:

Front Tire Pressure: 31.5 - 5.5 + 0.5 = 26.5

Rear Tire Pressure: 31.5 - 5.5 - 0.5 = 25.5

Road Cars and Rally / Off-road Cars with Drag, Road or Drift Chassis  Changed in Horizon 5 

Road cars generally require additional chassis tuning when bringing them to dirt or cross country tracks since their chassis is intended for road racing in the first place and not for off-road racing. 

Similarly rally and off-road cars that have drag, road or drift tires equipped require additional chassis tuning when bringing them to dirt or cross country tracks. Note that some especially older rally and off-road cars don't have stock rally or off-road tires, these cars must be treated as road cars regarding chassis tuning.

For Dirt drag chassis require lower front tire pressure while off-road, road and drift chassis require higher rear tire pressure. For Cross Country drag chassis require higher rear tire pressure while off-road, road and drift chassis require lower front tire pressure.

                                                                        Dirt                                                

Chassis         Front Tire Pressure Offset      Rear Tire Pressure Offset

Drag                               -0.5                                               0.0         

Offroad1                         0.0                                             +0.5                          

Rally1                              0.0                                             +0.5                          

Road                               0.0                                             +1.0                           

Drift                                0.0                                             +1.0                            

                                                               Cross Country           

Chassis        Front Tire Pressure Offset    Rear Tire Pressure Offset

Drag                               0.0                                            +0.5

Off-road1                      -0.5                                              0.0

Rally1                             -0.5                                              0.0

Road                             -1.0                                               0.0

Drift                              -1.0                                               0.0

1 only for road cars or rally / off-road cars with stock road tires

Cars with Off-road / Rally Chassis and Chassis Reinforcement  Changed in Horizon 5 

Cars with a off-road or rally chassis may require additional tire tuning depending on the installed chassis reinforcement upgrade. This is because for off-road racing Stock chassis reinforcement (no chassis reinforcement) is best suited, having a higher chassis stiffness via chassis reinforcement upgrades requires additional oversteer tuning to compensate for changed chassis behavior on the track.

Note: Many cars come already with a stock Street (only Sport or Race chassis reinforcement upgrades available), Sport (only Race chassis reinforcement upgrade available) or Race chassis reinforcement (no chassis reinforcement upgrades available) installed. Tune the tires accordingly.

Chassis Reinf.      Front Tire Pressure Offset    Rear Tire Pressure Offset

Stock                                       0.0                                            0.0

Street                                    +0.5                                           -0.5

Sport                                     +1.0                                           -1.0

Race                                      +1.5                                           -1.5

Heavy Cars 

Cars with a weight that exceeds 5000 lbs for Dirt or 6000 lb for Cross Country need increased tire pressure to compensate for high weight affecting tire contact patch size. For Dirt for each 2000 lb increase over 3000 lb an 5 psi tire pressure increase is required for best handling. For Cross Country For each 3000 lb increase over 3000 lb an 5 psi tire pressure increase is required for best handling.

Extreme heavy cars that exceed 8000 lbs are equipped with special tires, here car weight simply needs to be halved before doing the above calculations.

                                      Dirt                             Cross Country             

Weight            Tire Pressure Offset       Tire Pressure Offset

5000-5999                    +5.0                                       0.0

6000-6999                    +5.0                                     +5.0

7000-7999                   +10.0                                    +5.0

-----------------------------------------------------------------------------------------

8000-9999                      0.0                                        0.0

10000-11999                +5.0                                        0.0

12000-13999                +5.0                                      +5.0

14000-15999               +10.0                                     +5.0

Light Cars 

Light weight cars with a weight under 3000 lbs for Dirt or 4000 lb for Cross Country need decreased tire pressure to compensate for low weight affecting tire contact patch size. For Dirt for each 1000 lb decrease over 4000 lb an 5 psi tire pressure decrease is required for best handling. For Cross Country for each 2000 lb decrease over 6000 lb an 5 psi tire pressure decrease is required for best handling.

                                     Dirt                               Cross Country

Weight            Tire Pressure Offset        Tire Pressure Offset 

3000-3999                     0.0                                        -5.0

2000-2999                    -5.0                                        -5.0

1000-1999                  -10.0                                      -10.0

0-999                           -15.0                                      -10.0

Alignment

Dirt tunes require a more conservative, slight understeer alignment that helps stabilizing the car during cornering. In contrast cross country tunes require a more aggressive, slight oversteer alignment for improved cornering.

For dirt tunes increase front and rear camber by 0.1, decrease front toe by 0.1, increase rear by 0.1 and increase front caster by 0.1 to achieve a more conservative and understeer setup.

For cross country tunes reduce front and rear camber by 0.1, increase front toe by 0.1, decrease rear by 0.1 and decrease front caster by 0.1 to achieve a more aggressive and oversteer setup.

                             Camber       Front Toe      Rear Toe      Caster  

Dirt                         +0.1                  -0.1                +0.1             +0.1

Cross Country       -0.1                  +0.1                -0.1              -0.1   

Example: Car with general alignment settings: -2.0/-1.5/0.0/0.0/5.0

Alignment for Dirt Tune:

Front Camber: -2.0 + 0.1 = -1.9

Rear Camber: -1.5 + 0.1 = -1.4

Front Toe = 0.0 - 0.1 = -0.1

Rear Toe = 0.0 + 0.1 = 0.1

Caster = 5.0 + 0.1 = 5.1

Alignment for Cross Country Tune:

Front Camber: -2.0 - 0.1 = -2.1

Rear Camber: -1.5 - 0.1 = -1.6

Front Toe = 0.0 + 0.1 = 0.1

Rear Toe = 0.0 - 0.1 = -0.1

Caster = 5.0 - 0.1 = 4.9

Road Cars and Rally / Off-road Cars with Drag, Road or Drift Chassis  Changed in Horizon 5 

RoadR

Road cars generally require additional chassis tuning when bringing them to dirt or cross country tracks since their chassis is intended for road racing in the first place and not for off-road racing.

Similarly rally and off-road cars that have drag, road or drift tires equipped require additional chassis tuning when bringing them to dirt or cross country tracks. Note that some especially older rally and off-road cars don't have stock rally or off-road tires, these cars must be treated as road cars regarding chassis tuning.

For Dirt drag chassis require lower front camber and caster while off-road, road and drift chassis require higher rear camber and caster. For Cross Country drag chassis require higher rear camber and caster while off-road, road and drift chassis require lower front camber and caster.

                                                                              Dirt                                                

Chassis          Front Camber Offset      Rear Camber Offset       Caster Offset

Drag                             +0.5                                 0.0                                 -0.5

Off-road1                         0.0                                -0.5                                +0.5

Rally1                                0.0                                -0.5                                +0.5

Road                               0.0                                -1.0                                +1.0

Drift                                0.0                                -1.0                                +1.0

                                                                       Cross Country                                                

Chassis          Front Camber Offset      Rear Camber Offset       Caster Offset

Drag                               0.0                                -0.5                                 +0.5

Off-road1                     +0.5                                 0.0                                  -0.5

Rally1                            +0.5                                 0.0                                  -0.5

Road                            +1.0                                 0.0                                  -1.0

Drift                             +1.0                                 0.0                                  -1.0

1 only for road cars or rally / off-road cars with stock road tires

Cars with Race Suspension

Cars with race suspension require additional alignment adjustment for off-road racing. Generally race suspension requires higher camber and caster for best performance on road.

Front Camber Offset           Rear Camber Offset             Caster Offset

               -1.0                                          -0.5                                    +1.0

High Power Cars

For cars with with 400 hp or more power dirt and cross country tunes require additional camber and caster adjustment to account for higher forces on the chassis while cornering. For dirt tunes camber must be increased and caster reduced while for cross country tunes camber need to be decreased and caster need to be increased.

                                      Camber Offset        Caster Offset 

Dirt                                         +1.0                           -1.0

Cross Country                        -1.0                          +1.0

Cars with Off-road / Rally Chassis and Chassis Reinforcement  Changed in Horizon 5 

Cars with a off-road or rally chassis may require additional alignment tuning depending on the installed chassis reinforcement upgrade. This is because for off-road racing Stock chassis reinforcement (no chassis reinforcement) is best suited, having a higher chassis stiffness via chassis reinforcement upgrades requires additional oversteer tuning to compensate for changed chassis behavior on the track.

Note: Many cars come already with a stock Street (only Sport or Race chassis reinforcement upgrades available), Sport (only Race chassis reinforcement upgrade available) or Race chassis reinforcement (no chassis reinforcement upgrades available) installed. Tune the alignment accordingly.

Chassis Reinf.          Camber Offset         Front Toe Offset       Rear Toe Offset          Caster Offset 

Stock                                     0.0                                  0.0                              0.0                                 0.0

Street                                   -0.1                                +0.1                             -0.1                                -0.1

Sport                                    -0.2                                +0.2                             -0.2                                -0.2

Race                                     -0.3                                +0.3                             -0.3                                -0.3

Anti-roll Bars

Dirt tunes require a slightly stiffer, more understeer ARB setup that helps stabilizing the car during cornering and reduce body roll. Cross country tunes require a softer, more overststeer ARB setup that improves cornering,

For dirt tunes first increase ARBs by 0.1 to slightly stiffen the ARBs as compared to road tunes.  Then for achieving a slight understeer increase front ARB by 0.1 and decrease rear ARB by 0.1.

For cross country tunes first decrease ARBs by 0.1 to slightly soften the ARBs as compared to road tunes.  Then for achieving a slight oversteer decrease front ARB by 0.1 and increase rear ARB by 0.1.

                                Front ARB         Rear ARB

Dirt                          +0.1 + 0.1          +0.1 - 0.1

Cross Country         -0.1 - 0.1           -0.1 + 0.1

Example: Car with general ARB settings: 20.5/19.5

ARBs for Dirt Tune:

Front ARB: 20.5 + 0.1 + 0.1 = 20.7

Rear ARB: 19.5 + 0.1 - 0.1 = 19.5

ARBs for Cross Country Tune:

Front ARB: 20.5 - 0.1 - 0.1 = 20.3

Rear ARB: 19.5 - 0.1 + 0.1 = 19.5

Road Cars and Rally / Off-road Cars with Drag, Road or Drift Chassis  Changed in Horizon 5 

Road cars generally require additional chassis tuning when bringing them to dirt or cross country tracks since their chassis is intended for road racing in the first place and not for off-road racing.

Similarly rally and off-road cars that have drag, road or drift tires equipped require additional chassis tuning when bringing them to dirt or cross country tracks. Note that some especially older rally and off-road cars don't have stock rally or off-road tires, these cars must be treated as road cars regarding chassis tuning.

For Dirt drag chassis require higher front ARB stiffness and lower rear ARB stiffness while off-road, road and drift chassis require lower front ARB stiffness and higher rear ARB stiffness. For Cross Country drag chassis require lower front ARB stiffness and higher rear ARB stiffness while off-road, road and drift chassis require higher front ARB stiffness and lower rear ARB stiffness.

                                                                      Dirt                                                

Chassis       Front ARB Stiffness Offset      Rear ARB Stiffness Offset

Drag                              +12%                                           -12%     

Off-road1                       -12%                                           +12%                       

Rally1                              -12%                                           +12%                                 

Road                              -24%                                           +24%                    

Drift                               -24%                                           +24%                    

                                                             Cross Country                                                

Chassis       Front ARB Stiffness Offset      Rear ARB Stiffness Offset

Drag                               -12%                                          +12%           

Off-road1                       +12%                                          -12%                       

Rally1                              +12%                                          -12%                                  

Road                              +24%                                          -24%                    

Drift                               +24%                                           -24%               

 

1 only for road cars or rally / off-road cars with stock road tires     

High Power Cars

For cars with with 400 hp or more power dirt and cross country tunes require additional softening of ARBs to account for higher forces on the chassis while cornering. For dirt tunes ARB stiffness must be reduced by 24% and for cross country tunes ARB stiffness must be reduced by 12%.

                                     ARB Stiffness Offset

Dirt                                         -24%

Cross Country                       -12%

Cars with Off-road / Rally Chassis and Chassis Reinforcement  Changed in Horizon 5 

Cars with a off-road or rally chassis may require additional ARB tuning depending on the installed chassis reinforcement upgrade. This is because for off-road racing Stock chassis reinforcement (no chassis reinforcement) is best suited, having a higher chassis stiffness via chassis reinforcement upgrades requires additional oversteer tuning to compensate for changed chassis behavior on the track.

Note: Many cars come already with a stock Street (only Sport or Race chassis reinforcement upgrades available), Sport (only Race chassis reinforcement upgrade available) or Race chassis reinforcement (no chassis reinforcement upgrades available) installed. Tune ARBs accordingly.

Chassis Reinf.        Front ARB Offset          Rear ARB Offset

Stock                                     0.0                                   0.0         

Street                                   -0.1                                 +0.1

Sport                                    -0.2                                 +0.2

Race                                     -0.3                                 +0.3

Springs

Dirt tunes require a slightly softer, more understeer suspension setup for more grip and to stabilize the car during cornering. Speed tunes require a slightly stiffer, more oversteer suspension setup for improved control and cornering.

For dirt tunes first decrease front and rear springs slightly by 0.5 as compared to road tunes. Then for achieving a slight understeer setup increase front springs by 0.5 and decrease rear springs by 0.5.

For cross country tunes first increase front and rear springs slightly by 0.5 as compared to road tunes. Then for achieving a slight oversteer setup decrease front springs by 0.5 and increase rear springs by 0.5.

                                 Front Springs         Rear Springs

Dirt                               -0.5 + 0.5                 -0.5 - 0.5             

Cross Country            +0.5 - 0.5                +0.5 + 0.5

Example: Car with general spring settings: 567.15 / 365.14

Springs for Dirt Tune:

Front springs: 567.15 - 0.5 + 0.5 = 567.15

Rear springs: 365.14 - 0.5 - 0.5 = 364.14

Springs for Cross Country Tune:

Front springs: 567.15 + 0.5 - 0.5 = 567.15

Rear springs: 365.14 + 0.5 + 0.5 = 366.14

Road Cars and Rally / Off-road Cars with Drag, Road or Drift Chassis  Changed in Horizon 5 

Road cars generally require additional chassis tuning when bringing them to dirt or cross country tracks since their chassis is intended for road racing in the first place and not for off-road racing. 

Similarly rally and off-road cars that have drag, road or drift tires equipped require additional chassis tuning when bringing them to dirt or cross country tracks. Note that some especially older rally and off-road cars don't have stock rally or off-road tires, these cars must be treated as road cars regarding chassis tuning.

For Dirt and Cross Country generally require lower front and rear spring stiffness is required.

Chassis       Front Spring Stiffness Offset      Rear Spring Stiffness Offset

Drag                              -12%                                                    -12%                 

Off-road1                      -12%                                                    -12%                   

Rally1                                 -12%                                                    -12%                     

Road                              -24%                                                    -24%                    

Drift                               -24%                                                    -24%         

 

1 only for road cars or rally / off-road cars with stock road tires             

Cars with Race Suspension

Cars with race suspension generally require softer spring rates for off-road racing. Simply halve the general spring rates for race suspension for Dirt or Cross Country racing.

 

Note that this effectively means that you use the same spring rates for rally and race suspension for off-road racing  (general tuning states to halve the spring rates for rally suspension). Also this leads to minimum race suspension spring rates in most cases.

High Power Cars

For cars with with 400 hp or more power dirt and cross country tunes require additional softening of springs to account for higher forces on the chassis while cornering. For dirt tunes spring rates must be reduced by 24% and for cross country tunes spring rates must be reduced by 12%.

                                     Spring Rate Offset

Dirt                                           -24%

Cross Country                         -12%

Cars with Off-road / Rally Chassis and Chassis Reinforcement  Changed in Horizon 5 

Cars with a off-road or rally chassis may require additional ARB tuning depending on the installed chassis reinforcement upgrade. This is because for off-road racing Stock chassis reinforcement (no chassis reinforcement) is best suited, having a higher chassis stiffness via chassis reinforcement upgrades requires additional oversteer tuning to compensate for changed chassis behavior on the track.

Note: Many cars come already with a stock Street (only Sport or Race chassis reinforcement upgrades available), Sport (only Race chassis reinforcement upgrade available) or Race chassis reinforcement (no chassis reinforcement upgrades available) installed. Tune ARBs accordingly.

Chassis Reinf.        Front Spring Offset          Rear Spring Offset

Stock                                      0.0                                        0.0                 

Street                                    -0.5                                      +0.5                 

Sport                                        -1.0                                       +1.0                 

Race                                      -1.5                                       +1.5                 

Ride Height

Dirt and cross country tunes generally require maximum ride height for increased suspension travel while cornering and increased stability during acceleration and braking. Dirt tunes additionally require a slight understeer setup to stabilize the car while cornering while cross country tunes require a slight oversteer setup for improved cornering.

For dirt tunes set front and rear ride height to maximum possible values and then decrease rear ride height by 0.1 to achieve a slight understeer setup.

For cross country tunes set front and rear ride height to maximum possible values and then decrease front ride height by 0.1 to achieve a slight oversteer setup.

                               Front Ride Height           Rear Ride Height

Dirt                           set to max                          set to max - 0.1

Cross Country        set to max - 0.1                  set to max 

Example: Car with general ride height settings: 4.0 / 5.0, max ride height 5.5/5.8

Springs for Grip Tune:

Front ride height: 5.5

Rear ride height: 5.8 - 0.1 = 5.7

Ride height for Cross Country Tune:

Front ride height: 5.5 - 0.1 = 5.4

Rear ride height: 5.8

Road Cars and Rally / Off-road Cars with Drag, Road or Drift Chassis  Changed in Horizon 5 

Road cars generally require additional chassis tuning when bringing them to dirt or cross country tracks since their chassis is intended for road racing in the first place and not for off-road racing.

Similarly rally and off-road cars that have drag, road or drift tires equipped require additional chassis tuning when bringing them to dirt or cross country tracks. Note that some especially older rally and off-road cars don't have stock rally or off-road tires, these cars must be treated as road cars regarding chassis tuning.

For Dirt drag chassis require max rear ride height while off-road, road and drift chassis require max front ride height. For Cross Country drag chassis require max rear ride height while off-road, road and drift chassis require max front ride height.

                                                                    Dirt                                                

Chassis        Front Ride Height Offset    Rear Ride Height Offset

Drag                          set to Max                                    0.0                  

Off-road1                        0.0                                     set to Max

Rally1                               0.0                                     set to Max

Road                               0.0                                     set to Max

Drift                                0.0                                      set to Max

                                                           Cross Country                                                

Chassis        Front Ride Height Offset    Rear Ride Height Offset

Drag                                0.0                                   set to Max

Off-road1                 set to Max                                   0.0                 

Rally1                        set to Max                                   0.0                  

Road                        set to Max                                   0.0                  

Drift                         set to Max                                   0.0         

 

1 only for road cars or rally / off-road cars with stock road tires        

High Power Cars

For cars with with 400 hp or more power dirt and cross country tunes always require maximum ride height front and rear for maximum stabilization of the car.

Cars with Off-road / Rally Chassis and Chassis Reinforcement  Changed in Horizon 5 

Cars with a off-road or rally chassis may require additional ride height tuning depending on the installed chassis reinforcement upgrade. This is because for off-road racing Stock chassis reinforcement (no chassis reinforcement) is best suited, having a higher chassis stiffness via chassis reinforcement upgrades requires additional oversteer tuning to compensate for changed chassis behavior on the track.

Note: Many cars come already with a stock Street (only Sport or Race chassis reinforcement upgrades available), Sport (only Race chassis reinforcement upgrade available) or Race chassis reinforcement (no chassis reinforcement upgrades available) installed. Tune ride height accordingly.

Chassis Reinf.       Front Ride Height Offset    Rear Ride Height Offset

Stock                                          0.0                                           0.0                  

Street                                        -0.1                                         +0.1

Sport                                         -0.2                                         +0.3

Race                                          -0.3                                         +0.3

Dampers

Dirt and Cross Country tunes generally require lower damping to compensate for a bumpier driving surface with lower grip than roads. 

                                                    Rebound Offset         Bump Offset

                                                                   (Race Suspension)

Dirt                                                     -3.5                              -0.5

Cross Country                                   -6.0                              -1.0

 Changed in Horizon 5  Cars with rally or of-road suspension installed also require lower overall damping for dirt and cross country as compared to road racing. However due to the increased rally / off-road suspension damping range for in Horizon 5 over Horizon 4 (now 1-20, same as for race suspension instead of 1-10 in Horizon 4), dirt and cross country tunes require overall slightly stiffer damping than in Horizon 4.

                                                    Rebound Offset         Bump Offset

                                                          (Rally / Off-road Suspension )

Dirt                                                       -2.5                                0.0    Changed in Horizon 5  

Cross Country                                     -3.0                                0.0    Changed in Horizon 5  

Aside from generally lower damping as compared to road tunes dirt and cross country tunes also require a slight oversteer or understeer damper setup.  Dirt tunes require a slightly softer and more understeer damper setup for more grip and stabilization during cornering. Cross country tunes require a slightly stiffer and more oversteer damper setup for improved control and cornering.

For dirt tunes first decrease front and rear dampers slightly by 0.1 as compared to road tunes. Then for achieving a slight understeer setup increase front dampers by 0.1 and decrease rear dampers by 0.1.

For cross country tunes first increase front and rear dampers slightly by 0.1 as compared to road tunes. Then for achieving a slight oversteer setup decrease front dampers by 0.1 and increase rear dampers by 0.1.

                                 Front Rebound          Rear Rebound           Front Bump        Rear Bump

Dirt                               -0.1 + 0.1                       -0.1 - 0.1                   -0.1 + 0.1              -0.1 - 0.1

Cross Country             +0.1 - 0.1                    +0.1 + 0.1                    +0.1 - 0.1             +0.1 + 0.1

Example: Modern car with rally suspension and general damper settings: 8.6 / 8.9 / 2.0 / 2.2

Dampers for Dirt Tune:

Front rebound: 8.6 - 2.5 - 0.1 + 0.1 = 6.1

Rear rebound: 8.9 - 2.5 - 0.1 - 0.1 = 6.2

Front bump: 2.0 + 0.1 = 2.1

Rear bump: 2.2 - 0.1 = 2.1

Dampers for Cross Country Tune:

Front rebound: 8.6 - 3.0 + 0.1 - 0.1 = 5.6

Rear rebound: 8.9 - 3.0 + 0.1 + 0.1 = 6.1

Front bump: 2.0 + 0.1 - 0.1 = 2.0

Rear bump: 2.2 + 0.1 + 0.1 = 2.4

Road Cars and Rally / Off-road Cars with Drag, Road or Drift Chassis  Changed in Horizon 5 

Road cars generally require additional chassis tuning when bringing them to dirt or cross country tracks since their chassis is intended for road racing in the first place and not for off-road racing. 

Similarly rally and off-road cars that have drag, road or drift tires equipped require additional chassis tuning when bringing them to dirt or cross country tracks. Note that some especially older rally and off-road cars don't have stock rally or off-road tires, these cars must be treated as road cars regarding chassis tuning.

For Dirt drag chassis require higher front rebound and higher rear bump while off-road, road and drift chassis require higher rear rebound and higher front bump. For Cross Country drag chassis require higher rear rebound and higher front bump while off-road, road and drift chassis require higher front rebound and higher rear bump.

                                                                                              Dirt                                                

Chassis        Front Rebound Offset    Rear Rebound      Front Bump Offset    Rear Bump Offset

Drag                            +2.5                                 0.0                             0.0                                +2.5

Off-road1                      0.0                                +2.5                           +2.5                                 0.0

Rally1                             0.0                                +2.5                           +2.5                                 0.0

Road                             0.0                                +3.5                           +3.5                                 0.0

Drift                              0.0                                +3.5                           +3.5                                 0.0

                                                                                      Cross Country                                                

Chassis        Front Rebound Offset    Rear Rebound      Front Bump Offset    Rear Bump Offset

Drag                              0.0                               +2.5                            +2.5                                0.0

Off-road1                    +2.5                                 0.0                              0.0                               +2.5    

Rally1                           +2.5                                 0.0                              0.0                               +2.5    

Road                           +3.5                                 0.0                              0.0                               +3.5    

Drift                            +3.5                                 0.0                              0.0                               +3.5

1 only for road cars or rally / off-road cars with stock road tires 

Cars with Race Suspension

Cars with race suspension generally require softer damper tuning across the board for off-road racing.

Front Rebound Offset          Rear Rebound Offset        Front Bump Offset          Rear Bump Offset

                -3.5                                            -3.5                                       -3.5                                     -3.5

High Power Cars

For cars with with 400 hp or more power dirt and cross country tunes require additional stiffening of front dampers to account for higher forces on the chassis while cornering. For dirt tunes front rebound and bump must be increased by 2.5 while for cross country tunes front rebound and bump must be increased by 1.5.

Off-road cars with stock adjustable suspension (off-road suspension) require additional stiffening of front and rear rebound to account for higher forces on the chassis while cornering. For dirt tunes rebound must be increased by 2.5 while for cross country tunes rebound must be increased by 1.5.

                                                                                    (Race / Rally Suspension)    

                                 Front Rebound Offset     Rear Rebound      Front Bump Offset    Rear Bump Offset   

Dirt                                        +2.5                                    0.0                              +2.5                                0.0                    

Cross Country                      +1.5                                    0.0                              +1.5                                0.0   

                                                                                        (Off-road Suspension)    

                                 Front Rebound Offset     Rear Rebound      Front Bump Offset    Rear Bump Offset   

Dirt                                        +2.5                                    +2.5                              0.0                                0.0                    

Cross Country                      +1.5                                    +1.5                              0.0                                0.0   

Cars with Off-road / Rally Chassis and Chassis Reinforcement  Changed in Horizon 5 

Cars with a off-road or rally chassis may require additional damper tuning depending on the installed chassis reinforcement upgrade. This is because for off-road racing Stock chassis reinforcement (no chassis reinforcement) is best suited, having a higher chassis stiffness via chassis reinforcement upgrades requires additional oversteer tuning to compensate for changed chassis behavior on the track.

Note: Many cars come already with a stock Street (only Sport or Race chassis reinforcement upgrades available), Sport (only Race chassis reinforcement upgrade available) or Race chassis reinforcement (no chassis reinforcement upgrades available) installed. Tune dampers accordingly.

Chassis Reinf.         Front Rebound Offset     Rear Rebound      Front Bump Offset    Rear Bump Offset   

Stock                                          0.0                                    0.0                                0.0                                0.0                    

Street                                        -0.1                                  +0.1                              +0.1                               -0.1   

Sport                                         -0.2                                  +0.2                              +0.2                               -0.2   

Race                                          -0.3                                  +0.3                              +0.3                               -0.3   

Brakes

Dirt tunes require more braking force on the front and a higher braking pressure for improved braking and stabilization before corners. Cross country tunes require more braking force on the rear and a lower brake pressure for improved braking while turning (trail braking).

For dirt tunes move more braking force to the front by decreasing front brake distribution by 1% as compared to road tunes and increase brake pressure by 4%.

For cross country tunes move more braking force to the rear by increasing front brake distribution by 1% as compared to road tunes and decrease brake pressure by 4%.

                               Brake Distribution        Brake Pressure

Dirt                                      - 1%                                +4%

Cross Country                   + 1%                                -4%

Example: Car with general brake settings: 52% / 125%

Brakes for Dirt Tune:

Brake distribution: 52% - 1% = 51%

Brake pressure: 125% + 4% = 129%

Brakes for Cross Country Tune:

Brake distribution: 52% + 1% = 53%

Brake pressure: 125% - 4% = 121%

Cars with Race Suspension

Cars with race suspension require more braking force on the front for off-road racing for best handling.

Brake Distribution Offset

                  -4%

High Power Cars

For cars with with 400 hp or more power dirt and cross country tunes require reduction of brake pressure to account for higher forces on the chassis while braking. For dirt tunes brake pressure must be decreased by 20% while for cross country tunes brake brake pressure must be decreased by 10%.

                                 Brake Pressure Offset       

Dirt                                       -20%   

Cross Country                     -10%   

Cars with Off-road / Rally Chassis and Chassis Reinforcement  Changed in Horizon 5 

Cars with a off-road or rally chassis may require additional brake tuning depending on the installed chassis reinforcement upgrade. This is because for off-road racing Stock chassis reinforcement (no chassis reinforcement) is best suited, having a higher chassis stiffness via chassis reinforcement upgrades requires additional oversteer tuning to compensate for changed chassis behavior on the track.

Note: Many cars come already with a stock Street (only Sport or Race chassis reinforcement upgrades available), Sport (only Race chassis reinforcement upgrade available) or Race chassis reinforcement (no chassis reinforcement upgrades available) installed. Tune brakes accordingly.

Chassis Reinf.             Brake Distr. Offset         Brake Pressure Offset       

Stock                                            0                                              0

Street                                        +1%                                         +1%

Sport                                         +2%                                         +2%

Race                                          +3%                                         +3%

Differential

Dirt and cross country tunes generally require lower accel and higher decel settings for improved stability during cornering. Dirt tunes additionally require a slight understeer setup while cross country tunes require a slight oversteer setup.

For dirt tunes first decrease accel by 24% and increase decel by 40%, then to achieve a slight understeer setup decrease accel by 2% and increase decel by 1%. 

For cross country tunes first decrease accel by 12% and increase decel by 20%, then to achieve a slight oversteer setup

increase accel by 2% and decrease decel by 1%. 

                                  Accel Offset       Decel Offset

Dirt                              -24% - 2%           +40% + 1%

Cross Country           -12% + 2%           +20% + 1%

Example: Car with general differential settings: 28% / 45%

Differential for Dirt Tune:

Accel: 28% - 24% -1% = 3%

Decel: 45% + 40% + 1% = 86%

Differential for Cross Country Tune:

Accel: 28% - 12% + 1% = 17%

Decel: 45% + 20% - 1% = 64%

FWD Cars

For FWD only adjust front accel, leave front decel always at 0%:

AWD Cars

For AWD only adjust front accel and rear decel, leave front decel always at 0% and rear decel always at 100%.

 Changed in Horizon 5  After adjusting front accel and rear decel adjust distribution depending on the installed differential:

     Race Diff: Front Accel + 50% (2% + 48%),

     Rally Diff: Front Accel + 26% (2% + 24%)

     Offroad Diff: Front Accel + 14% (2% + 12%)

Cars with Race Suspension

Cars with race suspension require a more open diff, i.e. lower accel and decel for off-road racing for best handling.

   Accel Offset          Decel Offset

          -30%                        -30%

Cars with Off-road / Rally Chassis and Chassis Reinforcement  Changed in Horizon 5 

Cars with a off-road or rally chassis may require additional differential tuning depending on the installed chassis reinforcement upgrade. This is because for off-road racing Stock chassis reinforcement (no chassis reinforcement) is best suited, having a higher chassis stiffness via chassis reinforcement upgrades requires additional oversteer tuning to compensate for changed chassis behavior on the track.

Note: Many cars come already with a stock Street (only Sport or Race chassis reinforcement upgrades available), Sport (only Race chassis reinforcement upgrade available) or Race chassis reinforcement (no chassis reinforcement upgrades available) installed. Tune differential accordingly.

Chassis Reinf.         Accel Offset               Decel Offset

Stock                                  0                                     0

Street                               +2%                                 -1%

Sport                                +4%                                 -2%

Race                                 +6%                                 -3%

Gearing

Dirt tunes require overall longer gearing and tighter gear ratios for better utilization of the engines powerband in lower gears that allows to better attack and accelerate out of corners. Cross country tunes require overall shorter gearing but longer gear ratios for better utilization of the engines powerband in higher gears that works better when attacking obstacles.

For dirt tunes decrease the final drive by 1.0 and increase gear ratios by 0.2 as compared to road tunes . For cross country tunes increase the final drive by 1.0 and reduce gear ratios by 0.2 as compared to road tunes

                                   Final Drive          Gear Ratios

                                            (Race Transmission)

Dirt                                    -1.0                        +0.2

Cross Country                 +1.0                        -0.2

When using sport transmission for dirt tunes first decrease the final drive by 1.0 and then increase final drive by 0.2. For cross country tunes first increase the final drive by 1.0 and then decrease the final drive by 0.2.

                                              Final Drive        

                                   (Sport Transmission)

Dirt                                        -1.0 + 0.2

Cross Country                      +1.0 - 0.2

Example: Car with race gear box and general gearing: final drive 4.38, gear ratios: 2.89/1.99/1.49/1.16/0.96/0.78

 

Gearing for Dirt Tune:

Final Drive: 4.38 - 1.0 = 3.38

Gear ratios: 2.89/1.99/1.49/1.16/0.96/0.78 + 0.2 = 3.09/2.19/1.69/1.36/1.16/0.98

Gearing for Cross Country Tune:

Final Drive: 4.38 + 1.0 = 5.38

Gear ratios: 2.89/1.99/1.49/1.16/0.96/0.78 - 0.2 = 2.69/1.79/1.29/0.96/0.76/0.58

Aero

Generally dirt and cross country tunes require lower downforce.

For dirt tunes reduce front downforce by 15% and rear downforce by 30% as compared to road tunes. For cross country tunes reduce front downforce by 30% and rear downforce by 60% as compared to road tunes. 

                              Front Downforce            Rear Downforce

Dirt                               -15%                                       -30%

Cross Country             -30%                                       -60%

Example: AWD car with standard Forza race aero kit, general aero settings 220/220 (max / min)

Downforce for Dirt Tune:

Front Downforce = 220 - (220 *15%) = 187

Rear Downforce = 220 - (220 * 30%) = 154 --> 220 (min)

Downforce for Cross Country Tune:

Front Downforce = 220 - (220 * 30%) = 154

Rear Downforce = 220 - (220 * 60%) = 132 --> 220 (min)

Example: RWD car with standard Forza race aero kit, general aero settings 110/441 (min / max)

Downforce for Dirt Tune:

Front Downforce = 110 - (110 * 15%) = 94 --> 110 (min)

Rear Downforce = 441 - (441 * 30%) = 309

Downforce for Cross Country Tune:

Front Downforce = 110 - (110 * 30%) = 77 --> 110 (min)

Rear Downforce = 441 - (441 * 60%) = 176 --> 220 (min)

 Changed in Horizon 5  High Power Cars

For high power cars (>= 1.5*stock power) dirt and cross country tunes require higher downforce, i.e. less reduction of downforce as compared to road tunes.

                              Front Downforce            Rear Downforce

Dirt                              -12.50%                                -22.50%

Cross Country           -22.50%                                  -45%

Example: same AWD car as above but with power >= 1.5*stock power, general aero settings 220/330

Downforce for Dirt Tune:

Front Downforce = 220 - (220 * 12.50%) = 193

Rear Downforce = 330 - (330 * 22.50%) = 256

Downforce for Cross Country Tune:

Front Downforce = 220 - (220 * 22.50%) = 171

Rear Downforce = 330 - (330 * 45%) = 149 --> 220 (min)

Example: same RWD car as above but with power >= 1.5*stock power, general aero settings 165/441

Downforce for Dirt Tune:

Front Downforce = 165 - (165 * 12.50%) = 145

Rear Downforce = 441 - (441 * 22.50%) = 342

Downforce for Cross Country Tune:

Front Downforce = 110 - (110 * 22.50%) = 85 --> 110 (min)

Rear Downforce = 441 - (441 * 45%) = 243