Tire psi
As most (if not all) of you know, psi increases as tires warm up due to driving. My experience, here in Fl. where air and road temperatures get ungodly hot, is that it is not unusual for tires to gain...
Forum Discussion
But define "cold" If one is to set their PSI to 90 at an ambient temp of 50 degrees, and in 5 mins of driving they swell to 100psi, when I get to FLA the ambient temp is now 90 and the PSI is 100 "cold" and I could be over infalted. Am I expected to let air out or set PSI at every stop based on the new ambient temp? That's silly. And FWIW despite whatever ambient temp I set my PSI, they almost invariably get to a certain PSI while driving despite ambient temp. They sort of find the right PSI on their own. "Cold" is relative to where you are and where you are going. And since it's a MH I fully expect to be travelling in various climates and thus my "cold" changes constantly. Heck it might be 5 PSI different at lunch than it was in the morning. Or one might be 5 psi higher sitting in the sun. Tire PSI and Temp changes so much during travel that it seems really impossible to maintain the charted PSI. I don't loose sleep over it, get it close when it's cold. TPMS monitors it. I agree with the OP, what difference does it make if I set it to 85 and in 5 minutes it's 90, vs setting to 90 and in 5 minutes it's 95 psi and hard as bricks. After all, that 85 might very well be 90 psi if My cold temp changes during the day or at my destination.
