Assetto Corsa EVO: unstable over kerbs — what to change

What to change, exactly

Ranges, steps and defaults are the REAL ones for this sim. The amount is expressed in the game's own unit so you can apply it without converting anything.

Parameters flagged as “estimated range” do not come from a verified in-game capture: the direction of the change is right, the exact magnitude may differ on your car.

1. 1.Front anti-roll bar

   Lower ↓ by 11 slider stepestimated range

   Range: 0 – 15 · Default: 4

   How much the front axle resists roll. Stiffer = less roll but less relative front grip.

   What changes when you move it this way

   Softer front = more front grip and rotation; fixes understeer.

2. 2.Rear anti-roll bar

   Lower ↓ by 11 slider stepestimated range

   Range: 0 – 15 · Default: 5

   Rear axle roll resistance. Used together with the front to tune the car's lateral balance.

   What changes when you move it this way

   Softer rear = more traction and rear stability; fixes oversteer.

3. 3.Front slow bump

   Lower ↓ by 22 slider stepsestimated range

   Range: 0 – 20 · Default: 6

   Front damper compression speed in slow movements: weight transfer under braking, acceleration and cornering. (AC EVO only exposes slow damping.)

   What changes when you move it this way

   Softer = smoother weight transfer and more front grip, but the car feels lazier.

4. 4.Rear slow bump

   Lower ↓ by 22 slider stepsestimated range

   Range: 0 – 20 · Default: 7

   Rear damper compression speed in slow movements: governs weight transfer onto the rear and exit traction.

   What changes when you move it this way

   Softer rear = more rear traction and grip, with a slower response.

5. 5.Front slow rebound

   Lower ↓ by 11 slider stepestimated range

   Range: 0 – 20 · Default: 7

   Front damper extension speed after compressing. Controls how the front recovers its platform when load is released.

   What changes when you move it this way

   Softer lets the front recover quickly; it can 'float' and lose platform control.

6. 6.Rear slow rebound

   Lower ↓ by 11 slider stepestimated range

   Range: 0 – 20 · Default: 8

   Rear damper extension speed after compressing. Controls how the rear recovers its platform when load is released; key for exit traction.

   What changes when you move it this way

   Softer lets the rear recover quickly; it can 'float' and lose traction after bumps.

7. 7.Front ride height

   Raise ↑ by 2 mm2 slider stepsestimated range

   Range: 40 – 100 mm · Default: 60 mm

   Front floor-to-ground distance. Lower = lower centre of gravity and more aero load/ground effect. With the rear it sets the 'rake'.

   What changes when you move it this way

   Raising gives more travel for kerbs/bumps and less bottoming, costing some aero grip.

8. 8.Rear ride height

   Raise ↑ by 2 mm2 slider stepsestimated range

   Range: 50 – 120 mm · Default: 75 mm

   Rear ride height. It should be higher than the front (positive rake). More rake = more rotation and aero load; reducing the offset stabilises.

   What changes when you move it this way

   Raising the rear adds rake: more aero load and rotation, until it gets unstable if overdone.

If that wasn't it

Symptoms get confused with each other: what feels like poor traction is very often oversteer on throttle. These are the other diagnoses for this sim.

• Understeer on corner entryYou turn in and the car keeps going straight: it washes wide before the apex.
• Mid-corner understeerMid-corner, at steady speed, the car refuses to hold the line and you have to unwind the wheel.
• Understeer on corner exitAs you get on the throttle the car pushes wide and runs out of road on exit.
• Oversteer on corner entryAs you release the brake and turn in, the rear steps out and the car rotates too much before the apex.
• Mid-corner oversteerMid-corner the rear keeps sliding on its own and you are correcting with the wheel the whole way through.
• Snap oversteer on throttleYou get on the power on exit and the rear snaps sideways: spin, or a big correction.
• Unstable under brakingBraking hard in a straight line the car moves around, the rear tries to come round or you lock up.
• No traction on corner exitOn exit the driven wheels spin and the car won't hook up: you lose time down the next straight.
• Tyres overheatingGrip falls off after two or three laps and temperature or pressure climbs past the window.
• Tyres not coming up to temperatureThe first laps the car slides everywhere and the tyres take forever to switch on.
• Car bottoming outOver fast sections or compressions the floor hits the track, the car bounces and you lose grip exactly there.

The same problem in other sims

Same symptom, different parameters: each game exposes different sliders, with other units and other ranges.

• ACC
• LMU
• AC Rally
• EA WRC
• iRacing
• rFactor 2
• AMS2
• AC
• RaceRoom
• F1 25
• GT7
• Forza