Tyres

Generally, lower tyre pressure will provide more grip to a certain point.

For a road race car, personally I would not go below 20psi and not really any higher than 40psi. I usually go for mid 20’s.

For drag racing, you may want to go below 20psi.

Gearing

First, you can adjust the final drive while looking at the top speed in the left pane. Adjust the final drive until the point where the top speed won’t get any higher, you want it to be as far into acceleration as possible while still hitting the maximum possible top speed.

For first gear, you want to go into free roam and launch from a stand still at full throttle. If you are wildly bouncing off the rev limiter, you should adjust the first gear towards speed. If the car bogs and doesn’t bounce off rev limiter at all, you want to adjust first gear towards acceleration. You want the revs to be just around rev limiter, maybe touching it a few times but not too much.

For every other gear, you should first go into upgrades and look at the dyno graph and find around where you hit peak power. Every other gear should then be adjusted so it starts around where you hit peak power. If that is too high up the revs, you can lower a bit.

All gears could be adjusted slightly after to gain more top speed if needed.

Alignment

This should be done last after all other tuning settings.

Go into free roam and find some corners that you can take at full steering lock with as much throttle as possible without sliding or leaving the road. Open the telemetry and go to tyres,misc. Go around a corner at full steering lock and as much throttle as possible and watch the camber of the outside wheels. You want this value to be as close to 0 as possible.

For example, if the camber hit -0.9 in the corner, you would remove 0.9 from the current camber setting. You can then test again to verify or fine tune the adjustment.

Toe and Caster do not really need to be touched at the moment.

Anti-Roll Bars

To get a value in the ball park of where we want we can use a formula that uses the weight distribution of the car. This is found in the upgrades menu then toggling the stats so that you see horsepower and some other figures. You want the weight distribution that is written as “Front” then a percentage. Enter that into the calculator below along with the maximum and minimum anti-roll bar settings. You will be given a value to set for the front and rear anti-roll bars.

Please see the calculator at the bottom of the page.

Springs

To get a value in the ball park of where we want we can use a formula that uses the weight distribution of the car. This is found in the upgrades menu then toggling the stats so that you see horsepower and some other figures. You want the weight distribution that is written as “Front” then a percentage. Enter that into the calculator below along with the maximum and minimum spring settings. You will be given a value to set for the front and rear springs.

Please see the calculator at the bottom of the page.

Ride height should be set to the lowest possible.

Damping

To get a value in the ball park of where we want we can use a formula that uses the weight distribution of the car. This is found in the upgrades menu then toggling the stats so that you see horsepower and some other figures. You want the weight distribution that is written as “Front” then a percentage. Enter that into the calculator below along with the maximum and minimum rebound stiffness settings. You will be given a value to set for the front and rear rebound stiffness settings.

The bump stiffness should be set at around 50-75% of the rebound stiffness. Once you have entered values for rebound stiffness, the calculator will also give you the value of 50% and 75% and you can choose a value between those. If you are unsure, just choose somewhere in the middle.

Please see the calculator at the bottom of the page.

Aero

Aero can be set to what ever you want. Moving it all the way to cornering can help a lot in corners but will reduce your top speed, in my experience sometimes by more than 20mph. If you need the top speed, I suggest a balance. If you are unlikely to hit the top speed on a specific circuit, you could put more into cornering.

Brake

This section doesn’t really need to be changed.

Differential

If you have front, that should be around 25% acceleration, 0% deceleration.

If you have rear, that should be around 40-50% acceleration, 0% deceleration.

If you have centre, that should be around 50-90% depending on how much power you want going to the real wheels

Problem: Understeer

• Soften front anti-roll bar
• Soften front springs
• Increase power to rear wheels
• Increase front downforce
• Increase front bump stiffness
• Lower front rebound stiffness
• Lower differential lock percentage

Problem: Oversteer

• Decrease rear anti-roll bar stiffness
• Increase rear downforce
• Increase rear toe in
• Decrease rear rebound stiffness
• Increase differential lock percentage
• Move centre differential towards 50%

Problem: Unstable car

• Soften front suspension
• Decrease toe
• Adjust rebound/bump stiffness percentage
• Adjust downforce
• Check if suspension is bottoming out (in suspension telemetry)

Problem: Loss of grip

• Check tyre temperature, higher temperature will increase pressure. Maybe lower pressure.
• Decrease differential lock
• Move centre differential towards 50%
• Adjust rebound/bump stiffness
• Check camber settings
• Move gearing towards speed
• Increase downforce
• Soften anti-roll bars and/or springs