Upgrading the Tires of a 2015 Keystone Cougar 5th Wheel from a Load Range E to a Load Range G

Updated 11/18/2020 | Published 11/16/2020

Question:

I will purchasing a 2015 Keystone Cougar 338PAT. It currently has Goodyear Endurance ST235/80/16E on it can i upgrade to a Sailun 235/80/16 G ? i read the rims may not be rated for over 80 psi can you help ?

asked by: Kevin K

Expert Reply:

If you're looking for a tire with a higher psi than your current wheel can handle, then you'll need to replace the valve stem on your wheel to be able to accommodate it.

A 235/80R16 tire with a load range of G generally uses 110 psi, so you'll need to use the Americana Metal, Bolt-In Valve Stem, part # AM20906. It will fit in 0.453" and 0.625" rim hole diameters and is rated for psi between 100 and 200 pounds. I've linked to a video review of this valve stem for you to look at.

Keep in mind that though it comes with two grommets for the two hole diameters it will fit, you are only supposed to use the one that matches your diameter. The other will not be used.

expert reply by: Kef G