Whiskey River wrote:
Well I'll get in. I think RV tire's not being used is also part of the problem. Your pick-up or car in your garage or drive way gets used everyday, or couple/three times a week. The tires get heated up, cool down, heated/cooled, they get to flex and are not sitting in the same spot for 6 months or more. Now RV's, most sit most of the time, weather indoors or out. Couple trips during the summer maybe, then a thousand mile trip to Florida or Arizona and sit for 4 to 6 months. Some covered, some not. Some move during the seasons so as not to "flat spot" them, most not. And while sitting for 5 or 6 months, the air pressure drops and instead of having 80psi when parked, 5 months later the psi is 65. So RV tires are abused somewhat just by not being used.
And as SabreCanuck says, all the road debris may cause a weakening tire that blows 6 months later when you hit nothing. And the DOT's of all the states have not been able to design a bridge abutment or expansion joint to join the bridge to the existing ground does cause some teeth jarring moments.
The only time my truck gets used is when I pull my trailer. The rest of the time it sits, just like my trailer. I've had zero problems with the truck as opposed to the trailer. No flats or blowouts with the truck tires, the same cannot be said of the trailer tires.
FWIW I've never had trailer tires drop 15 psi while parked. The max is usually 5 psi or less. It and the truck usually sit from the middle of October to the middle of April.