I have about 30K on mine (maybe more not sure, had them since Dec 2004 and drive quite a bit) and they have about 10-15% left. Then again ive had a locker in it for a while and lately its been welded and i have been in plenty of instances where im on rocks smoking my tires so there goes some tread. Oh and i have had my share of good burnouts with those things.
Anyway great tire. Alot of people talk crap about them saying they suck on the rocks and have weak sidewalls but i use mine on the rocks, drop tires to about 4-5psi and they grip just as good as people with tsl/sx's in front of me so I dont see where people say they suck. Only thing they SUCK on is ice... OI bet if they were siped theyd be fine.
and i am running 37/12.50/15 on 15x10 rims