[Poolw]

Recommended tire pressures in my Superformance owner manual say - -
for both front and rear - 18 psi (cold) for normal driving and 25 psi for performance driving/track. I run 20 in the rears and 23 in the fronts. The fastest cobra in my club runs 11 secs and he uses 12 psi at the drag strip and about 16 for highway.

I guess the best way is to put some chalk on the street and roll over it and then check your tire to see if it all covered or just covered in the center. Repeat until the entire width is chalk covered, being the best for your car.