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      12-01-2011, 11:07 AM   #5
auggiem3
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Drives: e92 M3 / former e46 M3 owner
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Quote:
Originally Posted by luis_m3 View Post
I set my PS2s to 35/36 (cold)... they feel good "to me" both at the track and DD.
How can you run your tires at a cold 35/36 on a track day?

My PS2s need to drop down to 20-22 cold psi to keep them below 40-42 hot psi on track runs.

I ran them at a cold 26-28 psi last year and tested to a scary 52 psi after two 20 minute track sessions on a mild day (60 degrees f).

If I would have started at 35, I would have well exceeded the maximum pressure and probably experienced a blowout assuming I didn't lose it from lack of grip...