Howdee, Chuck!
Quote:
Originally Posted by TunaNoCrust
I have had very good luck sticking with the manufacturers recommendations, especially their minimum pressures. Those pressures are implying the car is properly setup, when I didn't have enough camber I had to run a couple psi higher to alleviate some of the roll over....that Poor Michelin Man didn't last too long on the shoulder.
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I reckon not...
TBH I haven't looked into "recommended minimum pressures", do tire manufacturers publish such? I would guess their recommendations would be a bit higher than we'd want to run as cold?
Today's test: Commuted to work at 75-80mph at ~10:00, 75F, tires went from 29/30 to 34/36 over 17 minutes. So figure that +5psi pressure change is due hysteresis in the tire from normal driving, the additional +5psi I get at the track is from additional heat into the tires from friction at the contact patches, and heat into the wheels from the brakes. And I guess the thermal mass of the air in the tire is enough that it takes ~17 minutes for hot pressures to fully develop, though presumably tires themselves and brakes and wheels get up to temp a lot quicker.
Just thinking out loud now...