"BTW... Did you notice the low inflation test that the LT has to pass? The ST doesn't have to do it at all. That is a very realistic possibility in the real world. A tire with a slow leak, running low on air. Even the ST proponents will tell you that is death to an ST tire. They are right, as there is no standard for it to meet. OTOH, the LT tire will give you a fighting chance of avoiding a catastrophic blowout under that situation, because it is REQUIRED to pass such a test."
If I could buy a 225 75 15" LR E LT tire I would have them on my trailer.
By the way, notice the blown truck tires on any highway. I've been told if there is steel showing, it was a new tire, not a retread. Basic cause, heat buildup due to low air.