Tracked my stock 2016 M4 at Thunderhill yesterday and my Michelin Super Sport PS4s virtually melted into hot goo in the 103į heat. I picked up a ton of marbles and the tiresí grip became unreliable enough that I called it in early.

I kept my tire pressure below 36 PSI after each session, 4 PSI above the manufacturerís recommended 32 PSI on the door jamb. Iím now wondering if the pressure is too high?

What pressure are you running when you track your car? Do you use a different pressure when itís hot out?