[jpinkert]

I think the most important thing to note is that you're running 18's (versus the stock 16's). I still haven't figured out what's the best pressure to run with mine at (wear and performance wise). Right now, I have it at 34 front, 38 rear and it seems to be working out. But I don't have enough miles to really notice any unusual wear. Has anyone checked to see the recommended tire pressures for the 993TT? I believe it has 18" wheels/tires.