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      05-27-2010, 03:14 PM   #5

Drives: 02 E46M3 15 F80 M3 16 X5 35d
Join Date: Mar 2009
Location: San Diego

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Garage List
2016 X5 35d  [0.00]
2015 BMW M3  [0.00]
2002 E46 M3  [0.00]
Originally Posted by Jaypod View Post
Actually it does - you need to be aware of what the max psi rating is for your tire. I would not recommend starting your pressure at 40 psi for the OEM PS2's for example which is max 50 psi - I usually started mine around 31-33 and after a session they generally get to around 40 and seemed to perform fine although the get a little greasy after 4 or 5 laps. I have seen tire temps start at 31-33 and go as high as 45psi which in my opinion is too high for this tire and this car which leads to premature wear and lots of oversteer (although that can be lots of fun )