I've said this many times before, the ST tire is not made to the same specifications as the LT tire is.
The ST tire is a cheaper tire than the LTs are, that's why most of the ST tires are speed rated lower than the LTs and also why they are not certified for passenger carrying use.
I've also said most of the larger (read heavier) trailers come from the manufacturer with LT tires on them.
For most of you that use a 15" tire and wheel combo, you can use the Goodyear Wrangler in the LT version if your size and capacity is available.
All my trailers have come with LT tires from the factory and we have had no problems at all with trailer tires.
1990 6500 Chevy Kodiak, 8.3L Cummins 450 HP
6sp Allison 3060, 3.70 R/A Home Made Air Ride
2006 Newmar Cypress - Picture's of our old one
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