Second Chance wrote:
One caveat... if the sun is shining on the tires on one side of the vehicle for a while before you, er..., make it outside, you may find up to a 10 PSI difference between the pressures on the sunny and shady sides (with a 20-30 degree difference in temperature). Often times I end up having to check tires on travel days when I'm up and about earlier - especially on the truck where the tires aren't shaded by the slides. The differential may not be as great on a passenger car tire inflated to 32 PSI as it is on E-rated truck tires at 65 - 80 PSI or G-rated trailer tires at 110 PSI. Bottom line, though, I always make sure it's a cold tire before I change the pressure one way or the other.
Rob
Agreed. Guess I am up usually before the sun hits the tires when we travel.
