I've got a set of 5 Interco 31x10.50 TruXus M/Ts on 15x8 AR-767 wheels. I ran them for ~2 years on my '98 XJ before I upgraded to a larger tire. The vehicle is a trail only rig, so the milage on the tires is low... maybe ~7.5k? Tread is in good shape...
A few nicks in the sidewalls, some rock...