Tyre pressure for competition racing

The table below gives you some guidance for tyre pressure in competition. These values are not approved for use on the road. Please readjust to original settings when you leave the circuit

Pressures indicated are for informative purposes only, experienced drivers are free to modify them according to preferences and mechanic limits. Pressure should be adjusted in increments of 0.15 psi for more precision

In order to prevent irregular wear on DOT certified tyres, you are strongly advised against under-inflating your tyres. Under-inflated tyres lead to the appearance of circle shaped wear on the shoulder block.Correct inflation keeps risks to a minimum.

Driver's behaviour is key to ensure tyres wear evenly.

Vehicle type	Position	Pressure
Front wheel	Front	34.8/ 45psi
Front wheel	Rear	2.1 / 34.8 psi
Front engine/ Rear wheel drive	Front	34.8 / 45psi
Front engine/ Rear wheel drive	Rear	30/40psi
Rear enginer/ Rear wheel drive	Front	34/45 psi
Rear enginer/ Rear wheel drive	Rear	34/ 40 psi

How to reduce under or over steering

The table below describes customized geometry settings adapted for competition racing. Those values are not adapted for driving outside the circuit. Please turn the settings back tho their original values when leaving the racing venue

Adjustements	Reduce under-steer	Reduce over-steer
Pressure front tyre	Lower	Higher
Pressure rear tyre	Bigger	Smaller
Width front tyre	Larger	Smaller
Width rear tyre	Smaller	Larger
Camber front wheek	More positive	More negative
Camber rear wheel	More negative	More positive
Toe in front wheel	More toe-out	More toe-in
Toe in rear wheel	More toe-in	More toe out
Castor front wheel	Softer	Harder
Caster rear wheel	Harder	Softer
Front anti-sway bar	Soften ( thinner)	Stiffen
Rear anti-sway bar	Stiffen	Soften

Driving in the rain

In case of rain, you are advised to overinflate your tyres by approximatively 5.8psi in order to limit the risks of aquaplaning.

Quick reminder, aquaplaning occurs when a layer of water gathers between the contact patch and the road. It can leas to a loss of traction.

Increasing pressure rounds the profile of the tyre, reducing the amount of deflection.

As a consequence, the contact patch gets thinner and narrower so that it keeps the grooves in the tread open to channel off water.

Car tyre

Search by size

Brand

Specificity

Tyre pressure for competition racing

How to reduce under or over steering

Driving in the rain

Concerning cookies and other trackers