America's tire recommended tire pressures

74vette wrote:
I am looking for new tires for the 5th wheel and stopped by America's tire for a price. They can order the Maxxis tire but were pushing the Carlisle. My current tires are D rated. The only Carlisle tire they had are rated E. When I asked about my wheels working with the higher pressure of the E rated tire, they told me I would be fine running 65 pounds instead of 80. I always thought you run the max pressure listed on the tire. Has anyone heard of this? My tire size is 225/75R15D and the trailer axels loaded are combined 7,700 with a pin weight of 1,700.

Thanks in advance,

Don't put E-range tires on D-range rims. Wait for the Maxxis D's or upgrade the rims to run E's. I was lucky enough that my aluminum rims were 80 psi rated even though my FW was delivered with D's. My bet is that they never even checked your rims for their rating, as many are stamped in the valley and the tire needs to be broken down to see it. Again, I was lucky in that mine are stamped on the inner bead. FWIW, I'm running the newer Carlisles due to Maxxis unavailability. So far, touch wood, they're working well for me. I watch them like a hawk. Got a thermometer to check them on the road, keep them on boards and covered in storage, and run no less than 70 psi when empty and 80 with any load.

Lyle