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      05-27-2010, 03:38 PM   #8
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Gearhead999s's Avatar
Drives: F25 2.8d(wifes)F82 M4
Join Date: Apr 2007
Location: Toronto

Posts: 6,773
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I generally start at about 32-34 psi and aim for 40-42 psi when the tires are hot.I have seen pressure increases of up to 15 lbs from the crappy R888's when I had poor rear grip.Even at the low tire pressures cold tire roll over has not been much of an issue.
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