mike-s wrote:
JIMNLIN wrote:
It make no cents/sense to use 50 psi in a 65 psi rated tire in a trailer position...JMO.
It absolutely does. The tires are part of the suspension, and more pressure makes for a rougher ride to vibrate your trailer apart. Wheels may have pressure limits. There's a reason the load/pressure tables have numbers in between the max for each load range. A LRD tire at 50 psi is already going to be slightly stiffer than a LRC at 50 psi, just due to the additional belt/ply strength. Although most ST tires get replaced before the tread wears out, even treadwear is another consideration.
Carlisle has a minimum pressure chart but recommends max sidewall pressure per their tire warranty.
Most folks know when we derate a 65 psi tire to 50 psi on a trailer it will run hotter than at 65 PSI. BTDT.
The benefit of the D tire is lost.
You can abuse your tires on your trailer by derating them. Its your money.
