air pressure
Anyone know what air pressure to use in the trailer wheels? My manual says check the tires side and the tire side says check the manual. Local RV dealer says 50#, which sounds high to me. What's ...
Forum Discussion
Chuck_S wrote:Read those sidewalls again!
ST (special trailer) tires should be inflated to the maximum pressure noted on the sidewall. This data is on EVERY tire sold in North America including those on your car or truck.
The most common ST tires are "Load Range C" which REQUIRE 50psi. Not 35, not 40, but 50psi. "Seems just right" to me. :) LR D tires, such on the U-haul I rented last weekend REQUIRE 65psi. Right there on the sidewall.
Max pressure is only REQUIRED if the tire is carrying its maximum rated load.
If the load is significantly less than the max, then lower pressures are OK.
Here is Goodyear's tire load/inflation chart specifically listing pressures required for various loads on ST tires.
