What tire pressure will give you the best traction?

[John V]

Originally Posted by racer_d

I have found that to dial out some of the inherant understeer, I run 36f/r and often bleed out the rears in an Autocross environment. Ideally, you want the hot pressures to coincide with the tire manufacturers guidelines. These may be hard to find for "street" tires, but for competition tires, its quite easy.

John.. you run PCA events or only SCCA? Not sure if SCCA is running locally this weekend, but Chesapeake PCA is at Ripken on Sunday (Fathers day).

BMW club runs on Saturday at Ripken and the SCCA has an event at FedEx on Sunday, so I'm all booked up.

Depending on what tires you're using and what size wheels they're on, you might find you'll go faster with lower pressures. 36 f/r would be much too high for a boxster on V710s, for instance, but for Hoosiers that may be about right. Victoracers and RA-1s require higher pressures as well.