[SmallHurst]

Depends on the car, but most start out at around 40 PSI. Best way to find out is to look at the contact patch after a small burnout. If it is dark in the center and light on the outside of the tread, you have too much pressure. If it is dark on the outsides and light in the center, the tire has too little pressure and is actually buckling up in the center. I have GoodYear Eagle GTII's on my car and run 36 PSI in mine. Lays down an even dark patch across the tread width.