What tire pressure do you typically run? I've been running 40psi in mine and just noticed yesterday how worn the centers are now. They are very concave.

So I reduced the air pressure down to 37psi and now the car squirms a bit in the rear. Is this sidewall flex you think?

I'm running S-03's BTW.

 

I've got Michelin PS2's and run 44psi .
5000 miles and little wear, but very even.

 

37psi for street use is too low, I have run factory spec for street use and found the tires to wear as expected, I would raise your pressures.

 

HOW wide are your wheels.....if they're too narrow for the tire, it causes it to BOW or essentially "point" the tire, causing it to wear quickly

 

I have 285/30-18 on 18x10

 

After some experimenting, I've settled on 35/38, PilotSport N1, C4S stock alignment, wheels & tires. 9300 miles, even wear.
By the way, 295 should be running on 11" wheels.

 

I normally run the stock 44psi in my PZero's (285/30/18) unless I have some desire for a smoother ride. Then I will drop to 40psi. Anything less than that and they feel squirmy to me (and I see shoulder wear). 9800 hard miles and the wear on the inner 3/4 is pretty even, although they're basically down to the wear bars now.