I run a 37" Toyo open country MT, they are the race only tire though, dont know how different that is from the DOT appoved version, but i like them, they are good on the rocks and last week in the mud they cleaned themselves up good too. The main reason i run them is my buddy gets them for $100 each with 90% on them.
05 Unlimited Rubicon, 37's, 5.5 Rock Krawler long arm
Yeah we had a set on our 2500 brush truck at the fire dept, looked good, hooked good, good highway song to them, but wore out way way to quickly!! Our tire man said they were discontinued in the size we were running so they switched to km2's for the current set, but im afraid they aren't gonna last long either. The truck weighs 9700 pounds
I love my Toyo's, I'm running 33 and they've been outstanding. In snow they were great, on rocks and mud they excel. Ice well that's a different story but I've yet to hear of MT that is good on ice. Noise wise they're noticeably quieter then the MT-R's with Kevlar but at a cost of weight. They are heavy, actually really really heavy and I notice it when braking. I've heard of them wearing quickly but it was always guys in full size pick ups complaining.
I have a set of 33x12.5x15 on my dd 00 TJ for the last 3 yrs. with out a problem. I know a few people have them on there full size and wearing out quickly. I don't think they were made for them big guys. The tire and a 15x8 steel wheel they are mounted on weigh in at 100lbs. each. I might get something different when it comes time.
It's my daily driver...... If I roll it i'm screwed!