Upgraded tires - air pressure?
I had load range D tires on my trailer that require 65 psi. They are the right load range for the trailer, but I wanted 10 ply so when it was time to change the tires I changed to load range E which i...
Forum Discussion
wrgrs50s wrote:
I know there's charts out there by tire manufacturers that state that a tire only needs to be inflated to a point that matches it's load requirement but "hey" they get to sell you a new tire if it fails. I've yet to see any data that says a tire has been known to fail if inflated to the tire manufacturers suggested pressure stamped on the tire.
A different perspective...passenger car tires have a max pressure on them and thats what the stated load rating is based on. I have not seen any passenger vehicle where the recommended air pressure equals the max pressure. Of course, the recommended air pressure provides enough capacity to hit the vehicle's GVWR and provide good handling and ride quality. Best wear is typically at a pressure below max. In fact, if under max weight capacity but at max PSI, you are likely to see accelerated wear on the center. ST tires may be different, but I would suggest that max service life would come from inflating tires to match load weight plus some safety margin. If wear is a concern, the load pattern on the tire can be checked wi chalk or a pyrometer.
