For the street. My cars a DD.
In the back I run 28-29
In the front 29-30.
Last set of fronts I had (195-50) at 27ish and when pushing hard the sidewall would flex a bit. When it was time for new, the center of the tire tread had a lot left, the sides were worn-out, I figure looking back I needed a pound or two more and performance would have been spot on. I figure if I had around 29 psi up front the tires may of lasted 2 to 3 thousand more miles, or at least wore a bit more even.
My wheels are the Track/Sport Pack wheels and I have the shims removed.
The rear tires wear even across the tire with 28-29psi.
I have had a few sets on my car now (I have 85,000 miles on it) and have played with the tires a little bit. Just got new fronts 2000 miles ago, (3weeks ago) and went with 205-50 up front this time. So far I’m using 30-31 psi up front and this seems to be good.
In the back I have 235-45 and run the same psi as I did with the 225 and wear seems the same. I’m on my second set of 235s in the back now and I think I’m sticking with this size. And I also removed two shims (each side) from the back and the tire wears even.
Well that’s what I’ve done at least :mw:
Kevin