We got a really good question on our RV Tire Inflation post, and I thought it deserved an answer in video form. So, without further ado, here it is: an “Ask The Fit RV” first:
I should confess that the reason I really liked this question is because I once asked it of myself. I did the research and answered it to my own satisfaction, but apparently I wasn’t the only one asking the question. The basic thought behind the question is:
“If you inflate your tires cold, and then they heat up, will they then be OVER pressurized?”
The answer is, in a nutshell, no.
The research I did told me one thing over and over again. Every source I looked at, from tire manufacturers to the NHTSA, was always referring to a “cold” tire pressure. And this wasn’t because they weren’t aware that your tires might heat up. Quite the opposite – they knew about it, and were counting on it. So, long story short, just remember this rule and you’ll be fine:
Yes, your tires will heat up, and yes, the pressure will increase. But everyone in the tire industry knows about this, and they’re not likely to go over pressure and burst. It’s actually far more dangerous to have under-inflated tires than over, so don’t under-inflate and count on the heat to bring the psi up. That’s a recipe for disaster.
There’s some other useful info in the video as well, so give it a watch!