I have a question for any tire experts here. I just finished a day at the Glen with only 4 track sessions. I have stock PS2's on my Cayman S. I started with 34psi all around and after the session the pressure had jumped to 44psi so I bled back to 38psi. After the next 2 sessions the pressure jumped to 41psi all around and each time I bled back to 38psi. I am passing on this info just to indicate that I was getting the tires hot, real hot in my opinion.

Anyway before I left home I checked tread depths on each tire and found 9/32" on the fronts outside and center and 8/32" on the inside. The rears were 8/32" outside and center and 7/32" on the inside edge.

After 700 miles traveling and the above mentioned track sessions, I check the tread depths again and found they were exactly the same, no wear. I would have thought there would be some measurable wear after the track sessions. Am I just not driving fast and hard enough on the track yet or are these tires just too good.

I can see some wear in the brake pads from this event.