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Old 05-12-2014, 06:36 PM   #15
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FastEagle is right, 60 psi is not a standard tire sidewall "max psi" number. 65 psi is the right number for D rated tires. So, unless you have a pretty old trailer, it sounds like the manufacturer was smart enough to put 60 psi on the sticker based on tire loading at the trailer's GVWR rather than just restating the sidewall max psi.

This is no different that what vehicle manufacturers do, all of my truck tires are E rated, i.e. 80 psi, but the sticker specifies 55 psi for the front tires based on front GAWR rather than the sidewall max number. And while the rear tires are supposed to be inflated to 80 psi, many of us will run significantly less than 80 psi when the truck is not loaded.

This is a round-about way to say, weigh the loaded trailer and use a load inflation chart to determine the correct psi.

Larry Day, Texas Baptist Men volunteer
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Old 05-19-2014, 01:11 PM   #16
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Perhaps a guide is the Michelin site, they list the pressures for various loads for various size tires. I would take those numbers to be as close to a valid guide.Michelin North America RV Load & Inflation Tables

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Old 05-28-2014, 07:19 PM   #17
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When I upgraded our previous trailer from 15" D tire to 16" E tires I had the same issues. I started at 80psi and dropped 5psi at a time till I had contact across the entire tread width. On that trailer it was 70psi.
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Old 05-31-2014, 05:36 PM   #18
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A rough ride beats the heck out of a blow out , slow down and enjoy your trip. I run the air pressure stated on the tire and run no faster than 60 MPH normally closer to 55 . I have found the trip is much more enjoyable when you set a slower pace . I have air ride suspension on my 5er always a smooth ride good luck and don't over look Maxxis trailer tires they are as good as you'll find. Safe travels....Dan

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tire pressure

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