[speed220mph]

You've got to deal with a bunch of "depends" here, and that's not what you wear for bladder control problems.

First off, tire brand doesn't mean much when it comes to tire pressure, but tire size means a lot . . . the bigger the tire, the less the pressure. The same applies to tire load, but is directly proportional . . . the more load, the more pressure.

What you're going to use the car for is very important. Racing requires higher pressures than for the street. But to arrive at the correct pressure requires a bit of testing to say the least because camber is also a factor under racing conditions. For the street, camber should be about straight up--a little negative at the rear--and pressures generally in the mid 20s at the front and high 20s at the rear. Keep a close eye on tire wear whatever pressures you run. Wear at the edges means too low pressure and wear in the middle means too high. So all I can say is try it and drive it, then makes changes accordingly.