Quote:
Originally Posted by Dave W
In other words the 80 psig rated front tires on my signature truck that are factory recommended to be set at 65psig will wear that way. Not on 3 sets in 126,000 miles and the significant unloaded weight is on the front.
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I'm not a tire expert, but I know a few things about tires. ST tires (made for trailers) are made differently than car or truck tires. In fact, Sailun specifically states that its trailer tires are not designed to be used on any other vehicle type.
All tires have a "max psi" on the sidewall. Normally this has no relationship to the suggested tire pressure specified by the vehicle manufacturer. You would never run a car or truck at the "max psi" as indicated.
The "max psi" on trailer tires specifically relates to the maximum load the tire can carry. Radial ST tires up to load range F have nylon body cords and steel on the tread. Must always run at the "max psi" as indicated on sidewall.
Radial ST tires load range G and up have steel cords everywhere. Weigh the rig fully loaded for a trip and inflate per the inflation chart.
At least that's the way I understand it. Others please chime in.