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      09-03-2012, 09:56 PM   #5
mrh335
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Drives: 2011 M3 sedan, jet black
Join Date: Oct 2006
Location: Chicago

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After a 20 minute first session at the Autobahn CC south course, my off track pressures were 42 psi front and rear with slightly higher pressures on the driver's side.

I bled them down to 40 psi and after the second 20 minute session, they were back up around 41.5 to 42 psi.

I checked the pressures the next morning when things had cooled down in the garage and about 75F out and the pressures read 32/33 in the front and 34.5/33.5 psi in the rear. I started the track session at 34 front and 35 rear (1 psi under the door jam pressures).

I guess next time I will run them even lower when I set them cold and make sure to keep letting air out.

Any other hints or tricks would be welcome.
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2011 E90 M3 Jet Black/Black
ZPP, ZCP, ZTP, ZCW, 6FL, PDC, shades, 6MT