No kidding. My point was that the increments were in single digits, not that I was intrigued with the fact that tires warm up or that their psi increases as that occurs.The pressure should vary as the tires heat up. That's a design feature
Regards
I'll ad that I don't agree that "friction" is "a design feature", I'm(we all are) betting our collective lives on it being there when we need it!!!!!!!!!!!!!!!!!!!!!
Regards !