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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?