986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Tire pressure for best cornering performance?

Sammy · 10-31-2006, 10:25 AM

I have found that during autocrosses when the front is lower than the rear the car understeers just like everyone has mentioned. When the tires heat up and the pressures increase I take pressure out of the rear to equalize between front and rear. The result is a more neutral/oversteer handling.

I think most people would prefer the neutral/oversteer handling when doing high performance driving which is why I think you liked the 28 psi all around better than the factory specs. IMHO 28 psi is too low...

Either way, for everday driving use the factory specs as understeer is much safer for everyone in all types of conditions. For the occasional twisties in good weather, I would pump them up in the 36+ psi range all around.

10-31-2006, 10:25 AM	#11
Sammy Registered User Join Date: Apr 2006 Location: Chicago Posts: 585	I have found that during autocrosses when the front is lower than the rear the car understeers just like everyone has mentioned. When the tires heat up and the pressures increase I take pressure out of the rear to equalize between front and rear. The result is a more neutral/oversteer handling. I think most people would prefer the neutral/oversteer handling when doing high performance driving which is why I think you liked the 28 psi all around better than the factory specs. IMHO 28 psi is too low... Either way, for everday driving use the factory specs as understeer is much safer for everyone in all types of conditions. For the occasional twisties in good weather, I would pump them up in the 36+ psi range all around.