Causes & Reasons

Oversteer Corners

Entry-Corner

  1. Rear, Less Camber
  2. Rear, Less Suspension
  3. Rear, Less Anti-Roll Bar
  4. Rear, Less Ride Height
  5. Rear, More Toe
  6. Front, Less Bump
  7. Front, Less Rebound
  8. Front, More Suspension
  9. Front, More Anti-Roll Bar
  10. Front, More Ride Height
  11. Front, Less Toe
  12. Engine, Less Differential Deceleration
  13. Engine, More Traction Control

Mid-Corner

Exit-Corner

  1. Less Differential Acceleration

Forza Tuning

This section is under development

Unit
Weight
Front
Tires Front
Tires Back
Ride Height Front
Ride Height Back
Design/Natural Downforce Front
Design/Natural Downforce Back
Drive
Schema
Steer Balance
Ride Stiffness
Tires
Pressure
Front
---
Back
---
Alignment
Camber
Front
---
Back
---
Toe
Front
---
Back
---
Front Caster
Angle
---
Anti-Roll
Stiffness
Front
---
Back
---
Springs
Springs
Front
---
Back
---
Ride Height
Front
---
Back
---
Damping
Rebound
Front
---
Back
---
Bump
Front
---
Back
---
Aero
Downforce
Front
---
Back
---
Brake
Braking
Balance
---
Force
---
Differential
Front
Accel.
---
Decel.
---
Back
Accel.
---
Decel.
---
Center
Balance
---
Straight Line Instability
Too much rear wheel toe-out.
Not enough rear downforce.
Too much front downforce.
Not enough rear toe-in (under hard acceleration) – presumably for RWD.
Too much front toe (either in or out) – car darts over bumps.
Front ARB is way too stiff – car darts over bumps.
Instability Under Brakes
Front end darts or wanders – too much front brake bias.
Car wants to spin – too much rear brake bias.
Response
Car feels heavy and unresponsive.
Too much downforce.
Car feels sloppy and is slow to take a set in corners.
Too little shock.
Too much body roll (not enough spring and/or ARB).
Car responds too quickly, is twitchy, and slides easily.
Too little downforce.
Too much shock, too much spring, and/or too much ARB.
Too much tire pressure.
Understeer
Corner entry understeer – car won’t turn in at all.
Front tires not wide enough.
Too much front roll stiffness – ARBs and/or springs.
Not enough front bump – shocks.
Not enough front downforce.
Too much front caster angle (not enough static negative camber).
Corner entry understeer – car turns in initially then starts to push.
Too much front toe-in.
Rebound too stiff – shocks (not enough droop travel).
Not enough front downforce.
Bump not stiff enough – shocks.
Corner entry understeer – car turns in and then darts.
Insufficient front suspension travel in either or both directions – shocks.
Oversteer
Corner exit oversteer – gets progressively worse from the time throttle is applied.
Too much rear roll stiffness.
Too much rear camber.
Too little rear downforce.
Too little rear toe-in.
Not enough rear spring, shock, or ARB – allows car to roll over on outside rear wheel.
Corner exit oversteer (sudden) - car takes its set then breaks loose.
Not enough rear suspension travel (too much shock in either bump, rebound, or both).

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