The Tacoma was running 35" M/S tires for the second set, they were real soft compound, add to that the fact that tire's above 32" are normally hard to get and keep balanced, so I expected them to wear quickly, but they surprised me by lasting 52k, I really only changed the set because the wife got a flat on them and tore the tire up getting off the highway, luckily just the tire and not my (at the time) new beadlock wheels.
The three good tires are still in use at this time on a friends off-road trailer, he rotates them after every trip and has managed to squeek another 6k out of them so far, and they still have some decent tread left.
That factor alone was the biggest reason I stayed with the same brand tire when buying my new set, I just went to a less aggressive all terraign tread since the truck see's less off-road now days.