When they first came out, I put them on my Suburban (LT size though, which has greater tread depth). I then proceeded to do a cross country trip towing a military generator that was supposed to be pulled behind a deuce and a half over I-80 in a blizzard. Made it without nary an issue.
So far, in 40k, they've done excellent in everything but rain. As they've worn down, they've gotten a bit squirrely when it rains (which it is doing all the time here), but in a 4 ton vehicle that's towed quite a bit in those 40k, I'm not going to complain.
Been contemplating them for my (new to me) LR3 as well.