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MazdaMatt · 12-09-2008, 10:35 AM

Yes, a driven tire will increase in PSI. However, the ratings are all in "cold PSI" so they take expansion into account.... as far as i know.

At least in racing, i can set my tire PSI to 36 and after a couple laps i'm at 40-41.

12-09-2008, 10:35 AM	#8 (permalink)
MazdaMatt Master EcoModder Join Date: Jun 2008 Location: London, Ontario Posts: 1,096 2k2Prot5 - '02 Mazda Protege5 90 day: 33.82 mpg (US) Thanks: 0 Thanked 17 Times in 14 Posts	Yes, a driven tire will increase in PSI. However, the ratings are all in "cold PSI" so they take expansion into account.... as far as i know. At least in racing, i can set my tire PSI to 36 and after a couple laps i'm at 40-41.