Goodyear Wrangler tire pressure when towing

[drvred]

What's everyone using 40? 45? Max sidewall pressure?
Just bought a new Flagstaff E20fbs, and while it towed well @38 psi with an empty trailer, I'm wondering whether to go up some more when I take it out the first time loaded in 2 weeks.

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[TripDad]

Use what is on the door jam. The Idea of using MAX pressure for towing is a hold over from the Bias Ply tire days.