Posts: 3504
Location: Elk River, Minnesota | Hiya!!
Trailer tires are built differently than auto tires...where this is most notably different is in sidewall construction. Being the trailer tire has a load rating on it, it only reaches that load rating when the tire is at the max psi. So... if you run the tire below your max inflation, you are actually not reaching the load rating for weight in the tire. This creates more heat in the tire, thus premature blow out. Also, the extra bouncing of the tire due to lower pressure increases that heat as well.
The tires are designed to run a couple of psi over the max rated and the pressures will rise as you run them... so. Running around 5 psi over when your tires have been running for a while is normal.
Q rated trailer tires... pretty nice deal there.
Steve |
