Hi, I recently had a blowout on my 2009 Skyline Layton 2970 TT (8,800 GVWR). Bought it used late last year, great shape, with Goodyears (including spare) on it that also looked in good shape and ...
I think the "scuffing" comment has to do with the design of the sidewalls not the tread. Because of the lateral pressure put on trailer tires as they are moved into parking situations the ST tire has a stronger sidewall than regular tires.