What Load Range 235/80-16 Tire for Grand Design Momentum 397th 5th Wheel

Question:

My ST235/80R16s are mounted on a 5th wheel Grand Design Momentum 397th. This trailer has a GVWR of 20,000 on 3 axels. The question is I clearly see the stamp of 110PSI stamped on the side wall. Ive read several of your QandAs that consistently refer to 80PSI for these tires. My assumption is to follow the MFG stamp would you agree? Next shouldnt a 5th wheel of this weight have load range E tires on it?

asked by: Allen Z

Expert Reply:

You would be correct in going with whatever the tire manufacturer lists on the sidewall as being the recommended tire pressure.

If you're referring to our photo of the # LHWL401, I was unable to make out the pressure rating shown in the photo. This tire does have a maximum pressure of 80 psi.

A Load Range G tire like # WE76FR would have a max pressure of 110 psi.

The load range E tire has plenty of capacity to handle the GVWR of your 5th wheel. Although it's not necessary, there's no harm in going with the LR G tire is you so wish.

expert reply by: Mike L