Forum Discussion

LoudDog's avatar
LoudDog
Explorer
May 18, 2017

Upgraded tires - air pressure?

I had load range D tires on my trailer that require 65 psi. They are the right load range for the trailer, but I wanted 10 ply so when it was time to change the tires I changed to load range E which is 80 psi.

The place I bought the tires from filled them to 65 psi (didn't notice until a few weeks later) but everything I am reading says always fill ST tires to the max.

So should I fill the tires based on trailer weight or the tire?

24 Replies

Show More
  • campigloo's avatar
    campigloo
    Explorer
    May 18, 2017
    I did the same thing on mine. Very glad I did. Mine has aluminum rims and there were no ratings for weight or pressure. The dealer I bought them from said being aluminum they should handle the increased pressure. I am now on my second set of 10 ply tires and no problems at 80psi.
  • bobndot's avatar
    bobndot
    Explorer III
    May 18, 2017
    Just a thought , maybe the tire shop only put in 65# because the wheel is only rated for 65#. I don't know if the OEM wheel will handle 80# safely. ( ? )
  • DutchmenSport's avatar
    DutchmenSport
    Explorer
    May 18, 2017
    I had a similar experience when I got new Carlisle's last year. They were at 65, but the side wall said max @ 80. I towed it that way a while and after a few suggestions on these forums, this spring decided to go ahead and push it to 80 psi. So far, ... um ... I really can't tell any difference.

About Travel Trailer Group

44,044 PostsLatest Activity: Jul 26, 2025