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Old 10-17-2012, 01:15 PM   #2
Heavy D
 
Drives: 2012 Camaro ZL1
Join Date: Jun 2012
Location: Chicago
Posts: 8
Hi Todd,

I used PTM 4, in dry conditions. I wouldn't start lower than PTM 3, if it is dry. I rode stock tire pressure in the morning, but after talking with a couple of track guys and the resident tire guru, I increased cold tire pressure to 38 front / 37 rear for the afternoon, and it seemed to run better.

-Sean
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