Recommended PSI for ST235/80R16 Load Range G Trailer Tire

Updated 10/17/2022 | Published 10/14/2022

Question:

I have Transporter Radial ST235/80R16 G 14Ply Installer said to run with 90 psi, Wheel Rim is rated at 110 psi@3750 LBS. Steel valve stems. Marking on Tire 105 Cold Tire PSI. What should the correct cold tire psi be. Forest River Wildcat 34WB Fifth Wheel, 11400lbs dry, 6000lbs axles

asked by: James L

Expert Reply:

In regards to a trailer tire like the Provider ST235/80R16 Radial Trailer Tire part # PRG80235, we must always recommend filling the tire to the max psi listed on the sidewall, no exceptions. The max psi listed on the sidewall for this tire is 110 psi so that is what we must recommend. This takes into consideration both ambient temperature, weight capacity, speed rating, and more.

If you have a different tire than the above, you will simply need to look on your tire for the max psi and adjust the pressure inside said tire accordingly. The max psi should be located on the sidewall of the tire, usually around where the load range rating is listed.

expert reply by: Conner L