Forza 7 Tuning Guide

Part 5 - Balance and Stiffness Tuning

This part explains build related balance and stiffness issues and how they can be fixed.

Understanding General Balance and Stiffness Issues

As you may have noticed already not every build configuration works well in Forza. Moreover a build configuration that works well on some cars doesn't work on others and vice versa. This is because Forza has a set of built-in rules which upgrades work well together depending on the type of car and certain car properties such as power and weight and which don't.

There are three type of issues that arise when using upgrades that don't work well together:

  • handling issues

  • balance issues

  • stiffness issues

Handling issues are caused by certain upgrade combinations and will result in an inherently inferior handling of the car that to my knowledge cannot be tuned out.

Balance and stiffness issues however can be tuned out so it is important to understand under which circumstances they are created and how they can be tuned out.

The following table depicts which upgrade area can cause general balance or stiffness issues. For details please refer to the related section below.

|                                                   Engine         Platform & Handling        Drivetrain       Aero & Appearance     Tires & Rims

General Balance Issues                ✓                                                                        ✓                                                                ✓ 

General Stiffness Issues               ✓                                ✓                                                                                                        ✓ 

General Balance Issues

General balance issues can be caused by engine, drivetrain and tire upgrades and are created on the front of the car, on the rear of the car or on both front and rear of the car depending on the upgrades causing the issues. 

 

Balance issues are given in +/- numbers for front and rear and simply add up across engine, drivetrain and tires. 

Engine

Balance issues on the engine occur when Intercooler or Oil and Cooling don’t match engine power unless when tuning for specific tracks where cooling should match track temperature, see below.

Street intercooler and oil and cooling is required for cars with a power >= 400 hp.

Sport intercooler and oil and cooling is required for cars with a power >= 500 hp.

Race intercooler and oil and cooling is required for cars with a power >= 600 hp.

Using an intercooler that is lower than the car power requires creates understeer (-1 to -3) on the front of the car.

Using an intercooler that is higher than the car power requires creates oversteer (+1 to +3) on the front of the car.


Using oil and cooling that is lower than the car power requires creates understeer (-1 to -3) on the front of the car.

Using oil and cooling that is higher than the car power requires creates oversteer (+1 to +3) on the front of the car.

Example: car with 620 hp / 462 kW with street intercooler + sport oil and cooling creates an understeer (-3) on the front of the car.


Note: this applies also to stock cooling parts, e.g. the stock intercooler might be a street intercooler (only sport and race intercooler upgrades are available) and stock oil and cooling might be sport oil and cooling (only oil and cooling upgrade is available).

Balance issues on the engine also occur when the Flywheel doesn’t match installed engine upgrades.

 

Using a flywheel that is lower than the highest installed engine upgrade except exhaust creates an understeer (-1 to -3) on the front of the car. 

Using a flywheel that is higher than the highest installed engine upgrade except exhaust creates an oversteer (+1 to +3) on the front of the car.
 

Example: street flywheel + race air filter creates an understeer (-2) on the front of the car.

Note: this applies also to stock engine parts, e.g. the stock flywheel might be a street flywheel (only sport and race flywheel upgrades are available) and a stock air filter might be a sport air filter (only race air filter upgrade is available).

 

Drivetrain

 

Balance issues on the drivetrain occur when the Transmission does not match with the cars power requirements except when using Full Speed or Full Grip builds, see below.

Street transmission is required for cars with a power >= 200 hp.

Sport transmission is required for cars with a power that exceeds car stock power by 100 hp.

Race transmission is required for cars with a power that exceeds car stock power by 200 hp.

Using a transmission that is higher than the cars power requirements creates an understeer (-1) on the front and the rear of the car.

Using  a transmission that is lower than the cars power requirements creates an oversteer (+1) on the front and the rear of the car.

Example: car with 219 hp, 180 hp stock power, using sport transmission creates an understeer (-1) on the front and the rear of the car. 

 

Balance issues on the drivetrain also occur when the Transmission don't match installed engine upgrades.

Using a transmission that is lower than the highest installed engine upgrade except exhaust creates an oversteer (+1 to +3) on the front and the back of the car.

Using a transmission that is higher than the highest installed engine upgrade except exhaust creates an understeer (-1 to -3) on the front and the back of the car.

Example: race air filter + street transmission creates an oversteer (+2) on the front and the rear of the car. 

 

Balance issues on the drivetrain also occur when Clutch and Driveline don‘t match the installed transmission.

Using a clutch that is lower than the installed transmission creates an understeer (-1 to -3) on the front and the rear of the car.

Using a clutch that is higher than the installed transmission creates an oversteer (+1 to +3) on the front and the rear of the car. 

Using a driveline that is lower than the installed transmission creates an understeer (-1 to -3) on the rear of the car.

Using a driveline that is higher than the installed transmission creates an oversteer (+1 to +3) on the rear of the car.

 

Example: street clutch + sport transmission + race driveline creates an understeer (-1) on the front of the car and an understeer (-1) and oversteer (+1) on the rear of the car, essentially neutralizing balance issues on the rear of the car.

Note: this applies also to stock drivetrain parts, e.g. the stock clutch might be a street clutch (only sport and race clutch upgrades are available) and a stock transmission might be a sport transmission (only race transmission upgrade is available).

Tires and Rims

Balance issues in tires and rims occur when the Tire Compound don't match the installed chassis reinforcement upgrade.

Using a tire compound that is higher than the installed chassis reinforcement upgrade creates an understeer (-1 to -3) on the front and rear of the car.

Using a tire compound that is lower than the installed chassis reinforcement upgrade creates an oversteer (+1 to +3) on the front and rear of the car.

Example: street chassis reinforcement + race tire compound creates an understeer (-2) on the front and the rear of the car.

Balance issues in tires and rims also occur when the Tire Width don’t match with the cars power requirements except when using full speed or full grip builds, see below. 

Each 100hp increase from cars stock power requires one tire width upgrade on the driven wheels, i.e. one rear tire width upgrade on RWD cars, one front tire width upgrade on FWD cars and one front and rear tire width upgrade on AWD cars. 

 

Each 200hp increase from cars stock power requires one tire width upgrade on the non-driven wheels, i.e. one front tire width upgrade on RWD cars and one rear tire width upgrade on FWD cars. 

 

Using a front tire width upgrade that is higher than the cars power require creates an understeer (-1) on the front of the car.

Using a front tire width upgrade that is lower than the cars power require creates an oversteer (+1) on the front of the car.

Using a rear tire width upgrade that is higher than the cars power require  creates an understeer (-1) on the rear of the car.

Using a rear tire width upgrade that is lower than the cars power require creates an oversteer (+1) on the rear of the car.

Example: car with 296hp power, 183hp stock power, stock front tire width, 3rd rear tire width upgrade creates an oversteer (+1) on the front of the car and an understeer (-1) on the rear of the car.

General Stiffness Issues

General stiffness issues can be caused by engine, platform and handling or tires and rims and are created on the front of the car, on the rear of the car or on both front and rear of the car depending on the upgrades causing the issues. 

 

Stiffness issues are given in +/- numbers for front and rear and simply add up across drivetrain and tires. 

 

Engine

Stiffness issues on engine occur when speed engine upgrades Fuel System, Carburetor, Ignition, Camshaft or Displacement are installed.

Using fuel system, carburetor, ignition, camshaft or displacement upgrades creates a stiffness (+1) on the front and the rear of the car.

Platform and Handling 

 

Stiffness issues in platform and handling occur when the Chassis Reinforcement upgrade doesn’t match with the car type and car weight except when using full speed or grip builds, see below. 

 

Street chassis reinforcement is required for street cars with 2500 lb or more weight, for utility cars with 3000 lb or more weight or for trucks with 3500 lb or more weight.

Sport chassis reinforcement is required for sports cars with 2000 lb or more weight, for street cars with 3000 lb or more weight, for utility cars with 3500 lb or more weight or for trucks with 4000 lb or more weight.

Race chassis reinforcement is required for race cars and high performance cars with 1500 lb or more weight, for sports cars with 2500 lb or more weight, for street cars with 3500 lb or more weight, for utility cars with 4000 lb or more weight or for trucks with 4500 lb or more weight.

 

Using a Chassis Reinforcement upgrade that is too low for the car type and weight creates a softness (-1) on the front of the car.

 

Using a Chassis Reinforcement upgrade that is too high for the car type and weight creates a stiffness (+1) on the front of the car.

Example: street car with 2600lb weight and sport chassis reinforcement creates a stiffness (+1) on the front of the car. 

Tires and Rims

Stiffness issues in tires and rims occur when Rim Style or Rim Size don’t match with the car type and weight except when using full speed or full grip builds, see below. 

 

Modern race and high performance cars require lightest rims, early modern race cars and modern productions cars require second lightest rims etc. until pre-war production cars that require heaviest rims. 

 

Using a rim style which weight class is too low for the car type creates a softness (-1) on the front and the rear of the car.

Using a rim style which weight class is too high for the car type creates a stiffness (+1) on the front and the rear of the car.

 

Stiffness issues on the rims also occur when the rim size doesn’t match with the cars weight except when using full speed or grip builds, see below. 

 

Each 100lb weight increase starting with 2500lb requires one rim size upgrade front and rear.

 

Using a front rim size which is lower than the cars weight requires creates a softness (-1) on the front of the car. 

Using a front rim size which is higher than the cars weight requires creates a stiffness (+1) on the front of the car. 

Using a rear rim size which is lower than the cars weight requires creates a softness (-1) on the rear of the car. 

Using a rear rim size which is higher than the cars weight requires creates a stiffness (+1) on the rear of the car.

Example: street car with 2600lb weight with lightest rims and stock front rim size and max rear rim size creates a softness (-1) and a stiffness (+1) on the front of the car and a softness (-2) on the rear of the car essentially neutralizing stiffness issues on the front.

Understanding Track Specific Balance and Stiffness Issues

When tuning for specific tracks there are additional track specific balance and stiffness issues that need to be considered.

Track specific balance and stiffness issues occur when the build does not match with the build requirements of a track.

 

The following table depicts which upgrade area can cause track specific balance or stiffness issues. For details please refer to the related section below.

|                                              Engine         Platform & Handling        Drivetrain       Aero & Appearance     Tires & Rims

Track Balance Issues               ✓                                                                        ✓                               ✓                                 ✓                          

Track Stiffness Issues                                                ✓                                                                                                           ✓ 

Track Specific Balance Issues

Track specific balance issues can be caused by drivetrain and aero and appearance upgrades and are created on the front of the car, on the rear of the car or on both front and rear of the car depending on the upgrades causing the issues. 

 

Balance issues are given in +/- numbers for front and rear and simply add up across drivetrain and aero and appearance. 

Engine

Track specific balance issues on the engine occur when using a Displacement upgrade on grip oriented tracks or a Pistons upgrade on speed oriented tracks.

Using the displacement upgrade on grip oriented tracks creates an understeer (-1) on the front of the car.

Using the pistons upgrade on speed oriented tracks creates an oversteer (+1) on the front of the car.

Track specific balance issues on the engine also occur when Intercooler or Oil and Cooling don’t match track temperatures.

Stock intercooler and oil and cooling is required for tracks with high temperatures such as Dubai or Yas Marina.

Street intercooler and oil and cooling is required for tracks with medium low temperatures such as Silverstone or Nurburgring.

Sport intercooler and oil and cooling is required for tracks with medium high temperatures such as Daytona or Road America.

Race intercooler and oil and cooling is required for tracks with low temperature such as Bernese Alps.

Using an intercooler that is lower than the track temperature requires creates understeer (-1 to -3) on the front of the car.

Using an intercooler that is higher than the track temperature requires creates oversteer (+1 to +3) on the front of the car.

Using oil and cooling that is lower than the track temperature requires creates understeer (-1 to -3) on the front of the car.

Using oil and cooling that is higher than the track temperature requires creates oversteer (+1 to +3) on the front of the car.

Example: car with 620 hp / 462 kW with street intercooler + sport oil and cooling creates an understeer (-3) on the front of the car.


Note: this applies also to stock cooling parts, e.g. the stock intercooler might be a street intercooler (only sport and race intercooler upgrades are available) and stock oil and cooling might be sport oil and cooling (only oil and cooling upgrade is available).

Drivetrain

 

Track specific balance issues on the drivetrain occur when the Transmission does not match with the tracks transmission requirements.

Full size tracks require race transmission, shorter tracks require sport transmission.

Using a transmission that is higher than the tracks transmission requirements creates an understeer (-1 to -3) on the front and the rear of the car.

Using  a transmission that is lower than the tracks transmission requirements creates an oversteer (+1 to +3) on the front and the rear of the car.

Example: Silverstone GP + street transmission creates an oversteer (+2)  on the front and the rear of the car.

Aero and Appearance

Track specific balance issues in aero and appearance occur when the Front Bumper and Rear Wing upgrades don't match with the tracks aerodynamic requirements. 

Full and medium sized race tracks require race front bumper and race rear wing, short race tracks require sport front bumper and sport rear wing.

Full and medium sized test tracks require sport front bumper and sport rear wing, short test tracks require street front bumper and street rear wing.

 

Full and medium sized road tracks require street front bumper and street rear wing, short road tracks require stock front bumper and stock rear wing.

Using a front bumper that is lower than the tracks aerodynamic requirements creates an understeer (-1 to -4) on the front of the car.

Using a rear wing that is lower than the tracks aerodynamic requirements creates an understeer (-1 to -4) on the front of the car.

Example: Silverstone GP + removed front bumper and race rear wing creates an understeer (-4)  on the front of the car.

Track specific balance issues in aero and appearance also occur when using the Side Skirts upgrade on grip oriented tracks. The side skirts upgrade is considered  a speed upgrade that offers improved aerodynamics but comes with a weight increase. Most of the tracks in Forza 7 are grip oriented tracks except some high speed tracks like Le Mans or Daytona.

Using the side skirts upgrade on grip oriented tracks creates an understeer (-1) on the front and the rear of the car. 

Tires and Rims

 

Track specific balance issues in tires and rims occur when Tire Width don’t match with the tracks tire width requirements. 

 

Full tracks require widest tires front and rear, medium tracks require second widest tires front and widest tires on rear and short tracks requires second widest tires front and rear.

Using a front tire width that is higher than the tracks tire width requirements creates a understeer (-1) on the front of the car.

Using a front tire width that is lower than the tracks tire width requirements creates a oversteer (+1) on the front of the car.

Using a rear tire width that is higher than the tracks tire width requirements creates a understeer (-1) on the rear of the car.

Using a rear tire width that is lower than the tracks tire width requirements creates a oversteer (+1) on the rear of the car.

Example: Silverstone GP + stock tire width front and rear creates an oversteer (+1)  on the front and the rear of the car.

Conversions

Track specific balance issues in conversions occur when using the Turbo or Twin Turbo conversion on grip oriented tracks. Most tracks in Forza are grip oriented except some high speed tracks like Le Mans or Daytona.

 

Likewise balance issues are created when using the Positive Displacement Supercharger or Centrifugal Supercharger conversion on speed oriented tracks.

Using the turbo or twin turbo conversion on grip oriented tracks creates an understeer (-1) on the front of the car.

Using the positive displacement supercharger or centrifugal supercharger conversion on speed oriented tracks creates an oversteer (+1) on the front of the car.

Track Specific Stiffness Issues

Track specific stiffness issues can be caused by platform and handling and tires and rims upgrades and are created on the front of the car, on the rear of the car or on both front and rear of the car depending on the upgrades causing the issues. 

 

Stiffness issues are given in +/- numbers for front and rear and simply add up across platform and handling and tires and rims. 

 

Platform and Handling

Track specific stiffness issues in platform and handling occur when the Chassis Reinforcement upgrade does not match with the chassis stiffness requirements of the track.

Full and medium sized race tracks require race chassis reinforcement, short race tracks require sport chassis reinforcement.

Full and medium sized test tracks require sport chassis reinforcement, short test tracks require street chassis reinforcement.

Full and medium sized road tracks require street chassis reinforcement, short road tracks require stock chassis reinforcement.

Using a chassis reinforcement upgrade that is higher than the tracks chassis stiffness requirements creates a stiffness (+1) on the front of the car.

Using a chassis reinforcement upgrade that is lower than the tracks chassis stiffness requirements creates a softness (-1) on the front of the car.

Example: Silverstone GP + sport chassis reinforcement creates a softness (-1)  on the front of the car.

Tires and Rims

 

Track specific stiffness issues on the tires occur when Tire Compound don’t match with the tracks tire compound requirements. 

 

Full and medium sized race tracks require race tire compound, short race tracks require sport compound.  

Full and medium sized test tracks require sport tire compound, short test tracks require street compound.  

Full and medium sized road tracks require street tire compound, short road tracks require stock compound.

Using a tire compound that is lower than the tracks tire compound requirements creates a stiffness (+1) on the front and the rear of the car.

Using a tire compound that is higher than the tracks tire compound requirements creates a softness (-1) on the front and the rear of the car.

Example: Silverstone GP + sport tire compound creates a stiffness (+1)  on the front and the rear of the car.

Track specific stiffness issues in tires and rims also occur when Rim Size don’t match with the tracks rim size requirements. All tracks require stock rim size for best performance, i.e. any rim size upgrade creates a stiffness issues.

Using a front rim size upgrade creates a stiffness (+1) on the front of the car.

Using a rear rim size upgrade creates a stiffness (+1) on the rear of the car.

Fixing Balance and Stiffness Issues

Fixing balance and stiffness issues simply means to apply the reverse setting across the affected tuning areas , e.g. a front understeer (-1) issue should be be corrected with a front oversteer (+1), a front understeer (-2) issue should be be corrected with front oversteer (+2) etc. 

The following table depicts which tuning areas are affected when correcting balance or stiffness issues. Please refer to the related section below for detailed explanations.

|                                    Tires       Alignment         ARBs            Springs           Dampers          Brakes       Diff

                                                                                           

Balance Issues                ✓                  ✓                     ✓                     ✓                       ✓                       ✓              ✓         

Stiffness Issues                                                           ✓                     ✓                       ✓                            

Tires

Adjusting tire pressures to correct balance issues means to apply the reverse balance setting to compensate the balance issue. e.g. a front understeer -1 issue is corrected with a front oversteer + 1 (i.e. increasing front tire pressure by 0.5 psi), a front understeer - 2 is corrected with front oversteer + 2 (i.e. increasing front tire pressure by 1.0 psi) etc.

Balance Issue                 Front Tire Pressure      Rear Tire Pressure 

Front Oversteer + 1                        -0.5                                  

Front Understeer -1                       +0.5

Rear Oversteer + 1                                                                -0.5

Rear Understeer  -1                                                              +0.5

Alignment

Adjusting alignment to correct balance issues means to apply the reverse balance setting to compensate the balance issue. e.g. a front understeer -1 issue is corrected with a front oversteer + 1 (i.e. decreasing front camber, increasing front toe and decreasing caster by 0.1), a front understeer - 2 is corrected with front oversteer + 2 (i.e. decreasing front camber, increasing front and decreasing caster by 0.2) etc.

Balance  Issue                  Front Camber     Rear Camber       Front Toe       Rear Toe         Caster

Front Oversteer + 1                  +0.1                                                       -0.1                                       +0.1

Front Understeer - 1                 -0.1                                                       +0.1                                       -0.1

Rear Oversteer + 1                                                    +0.1                                             +0.1                

Rear Understeer - 1                                                   -0.1                                              -0.1                

Anti-roll Bars

Adjusting anti-roll bars to correct balance issues means to apply the reverse balance setting to compensate the balance issue. e.g. a front understeer -1 issue is corrected with a front oversteer + 1 (i.e. decreasing front ARB by 0.1), a front understeer - 2 is corrected with front oversteer + 2 (i.e. decreasing front ARB by 0.2) etc.

Balance Issue                  Front ARB           Rear ARB

Front Oversteer + 1               +0.1                    

Front Understeer - 1              -0.1                     

Rear Oversteer - 1                                              -0.1

Rear Understeer -1                                            +0.1

Adjusting anti-roll bars to correct stiffness issues means to apply the reverse stiffness setting to compensate the stiffness issue. e.g. a front stiffness + 1 issue is corrected with a front softness + 1 (i.e. increasing front ARB by 0.5), a front stiffness + 2 is corrected with front softness - 2 (i.e. increasing front ARB by 1.0) etc.

Stiffness Issue                 Front ARB           Rear ARB

Front Stiffness + 1                 +0.1                    

Front Softness - 1                   -0.1                     

Rear Stiffness - 1                                                 +0.1

Rear Softness -1                                                   -0.1

Mid and Rear Engine Cars

Mid and rear engine cars require reverse ARB adjustments to correct balance issues as compared to regular front engine cars:

Balance Issue                  Front ARB           Rear ARB

Front Oversteer + 1               -0.1                    

Front Understeer - 1             +0.1                     

Rear Oversteer - 1                                              +0.1

Rear Understeer -1                                             -0.1

Springs

Adjusting springs to correct balance issues means to apply the reverse balance setting to compensate the balance issue. e.g. a front understeer -1 issue is corrected with a front oversteer + 1 (i.e. decreasing front springs by 0.5), a front understeer - 2 is corrected with front oversteer + 2 (i.e. decreasing front springs by 1.0) etc.

Balance Issue                  Front Springs       Rear Springs

Front Oversteer + 1                +0.5                    

Front Understeer - 1               -0.5                     

Rear Oversteer - 1                                                   -0.5

Rear Understeer -1                                                 +0.5

Adjusting springs to correct stiffness issues means to apply the reverse stiffness setting to compensate the stiffness issue. e.g. a front stiffness + 1 issue is corrected with a front softness - 1 (i.e. decreasing front springs by 0.5), a front stiffness - 2 is corrected with front softness - 2 (i.e. decreasing front springs by 1.0) etc.

Stiffness Issue                 Front Springs       Rear Springs

Front Stiffness + 1                    -0.5                                      

Front Softness - 1                    +0.5                        

Rear Stiffness - 1                                                      -0.5

Rear Softness -1                                                      +0.5

Mid and Rear Engine Cars

Mid and rear engine cars require reverse spring adjustments to correct balance issues as compared to regular front engine cars:

Balance Issue                  Front Springs       Rear Springs

Front Oversteer + 1                -0.5                    

Front Understeer - 1              +0.5                     

Rear Oversteer - 1                                                   +0.5

Rear Understeer -1                                                  -0.5

Ride Height

Adjusting ride height to correct balance issues means to apply the reverse balance setting to compensate the balance issue. e.g. a front understeer -1 issue is corrected with a front oversteer + 1 (i.e. decreasing front ride height by 0.1), a front understeer - 2 is corrected with front oversteer + 2 (i.e. decreasing front ride height by 0.2) etc.

Balance Issue                  Front Ride Height       Rear Ride Height

Front Oversteer + 1                    +0.1                    

Front Understeer - 1                   -0.1                     

Rear Oversteer - 1                                                              -0.1

Rear Understeer -1                                                            +0.1

Adjusting ride height to correct stiffness issues means to apply the reverse stiffness setting to compensate the stiffness issue. e.g. a front stiffness + 1 issue is corrected with a front softness - 1 (i.e. increasing front ride height by 0.1), a front understeer - 2 is corrected with front oversteer + 2 (i.e. increasing front ride height by 0.2) etc.

Stiffness Issue                 Front Ride Height       Rear Ride Height

Front Stiffness + 1                      +0.1                    

Front Softness - 1                       -0.1                     

Rear Stiffness - 1                                                                 +0.1

Rear Softness -1                                                                  -0.1

Mid and Rear Engine Cars

Mid and rear engine cars require reverse ride height adjustments to correct balance issues as compared to regular front engine cars:

Balance Issue                  Front Ride Height       Rear Ride Height

Front Oversteer + 1                    -0.1                    

Front Understeer - 1                  +0.1                     

Rear Oversteer - 1                                                              +0.1

Rear Understeer -1                                                             -0.1

Dampers

Adjusting dampers to correct balance issues means to apply the reverse balance setting to compensate the balance issue. e.g. a front understeer -1 issue is corrected with a front oversteer + 1 (i.e. decreasing front rebound and increasing rear bump by 0.1), a front understeer - 2 is corrected with front oversteer + 2 (i.e. decreasing front rebound and increasing rear bump by 0.2) etc.

Balance Issue                  Front Rebound       Rear Rebound       Front Bump       Rear Bump 

Front Oversteer + 1                +0.1                                                                                          -0.1

Front Understeer - 1               -0.1                                                                                          +0.1                     

Rear Oversteer - 1                                                         +0.1                        -0.1

Rear Understeer -1                                                        -0.1                        +0.1

Adjusting dampers to correct stiffness issues means to apply the reverse stiffness setting to compensate the stiffness issue. e.g. a front stiffness + 1 issue is corrected with a front softness - 1 (i.e. decreasing front dampers by 0.1), a front stiffness - 2 is corrected with front softness - 2 (i.e. decreasing front dampers by 0.2) etc.

Stiffness Issue                 Front Rebound       Rear Rebound       Front Bump       Rear Bump 

Front Stiffness + 1                    -0.1                                                                 -0.1                                      

Front Softness - 1                    +0.1                                                                +0.1                        

Rear Stiffness - 1                                                           -0.1                                                       -0.1

Rear Softness -1                                                           +0.1                                                       +0.1

Mid Engine Cars

Mid engine cars require reverse rebound adjustments to correct balance issues as compared to regular front engine cars:

Balance Issue                  Front Rebound       Rear Rebound       Front Bump       Rear Bump 

Front Oversteer + 1                 -0.1                                                                                          -0.1

Front Understeer - 1               +0.1                                                                                         +0.1                     

Rear Oversteer - 1                                                         -0.1                        -0.1

Rear Understeer -1                                                       +0.1                       +0.1

Rear Engine Cars

Rear engine cars require reverse rebound and bump adjustments to correct balance issues as compared to regular front engine cars:

Balance Issue                  Front Rebound       Rear Rebound       Front Bump       Rear Bump 

Front Oversteer + 1                 -0.1                                                                                          +0.1

Front Understeer - 1               +0.1                                                                                          -0.1                     

Rear Oversteer - 1                                                         -0.1                        +0.1

Rear Understeer -1                                                       +0.1                        -0.1

Brakes

Adjusting brakes to correct balance issues means to apply the reverse balance setting to compensate the balance issue. e.g. a front understeer -1 issue is corrected with a front oversteer + 1 (i.e. decreasing brake distribution and increasing brake pressure by 1%), a front understeer - 2 is corrected with front oversteer + 2 (i.e. decreasing brake distribution and increasing brake pressure by 2%) etc.

Balance Issue                  Brake Distribution          Brake Pressure 

Front Oversteer + 1                    +1%                                    -1%

Front Understeer - 1                   -1%                                    +1%                     

Differential

Adjusting differential to correct balance issues means to apply the reverse balance setting to compensate the balance issue. e.g. a front understeer -1 issue is corrected with a front oversteer + 1 (i.e. decreasing diff decel by 1%), a front understeer - 2 is corrected with front oversteer + 2 (i.e. decreasing diff decel by 2%) etc.

Balance Issue                   Diff Accel      Diff Decel     

Front Oversteer + 1                                        +1%

Front Understeer - 1                                       -1%                     

Rear Oversteer - 1                  -2%

Rear Understeer -1                +2%

FWD Cars

For FWD cars don't adjust the Front Diff Decel, only adjust the Front Diff Accel.

AWD Cars

For AWD cars don't adjust the Front Diff Decel and Rear Diff Accel, only adjust the Front Diff Accel and rear Diff Decel. Apply the same adjustment for Diff Accel also for Diff Distribution.