Tire pressure fluctuation when hot
Via my tire pressure monitor kit, I noticed that my tire pressures in all 6 tires increased uniformly by as much as 18psi from cold pressure on a long trip thru the desert. Is this normal? I drive...
Forum Discussion
locster wrote:
Yes, they all dropped to my cold setting pressure after cooling down. I've confirmed the readings from the TPMS on a few occasions with my manual gauge as well.
So are YOUR cold settings also the settings recommended by the coach maker ??
18 PSI does seem like a lot unless you are starting out at 50 F and ending up at 110 F maybe; in which case the pavement and tires might be at 150F or more for a swing of 100F or more.
If you are in an unusual situation like that, I think I'd drop my cold pressure a couple of PSI and then not worry about it.
If you have jacked up the cold pressure from the recommendation without a good reason (weight increase), you should consider putting them back.
