Quote:
Originally Posted by phillyg
Yes, you're correct WRT to car/trailer comparisons. OTOH, if a tire mfgr. (Sailun, for example) provides an inflation chart showing a range of 80 to 110psi depending on the carried load for its ST tire, one can use as little as 80psi after compensating for the pin weight. There is no common-sense reason to use 110psi if a trailer weighs, for example, 12,000lbs. I'd argue those tires would experience more center wear, less footprint and unnecessarily jar the trailer and its contents.
|
There is no valid reason to inflate RV trailer tires to the load carried. The USTMA provides the industry stands for such tire inflations. However, vehicle manufacturer recommended cold inflation pressures are considered minimum and the USTMA will not recommend anything less.
Here is the standard from the USTMA.
"Inflation pressure recommendations may also be determined based on the tire manufacturer’s specifications, which define the amount of inflation pressure necessary to carry a given load. These inflation pressures may differ from those found on the vehicle tire placard or certification label."
"However, never use inflation pressure lower than specified by the vehicle tire placard, certification label or owner’s manual. Nor should inflation pressure exceed the maximum pressure molded on the tire sidewall."
It's important to remember that vehicle manufacturers have the sole responsibility to set recommended cold inflation pressures for Original Equipment tires. Those recommendations are minimum and carry over to all replacement tires.