I ran the stock Michelins for 48,000 miles, got a set of BFGoodrich All-Terrain KO's and took them back, they were only 8ply load range D, my trailer was making the rear end sway on the truck, I went with the BFGoodrich Rugged Trail TA's, 10ply load range E, much better. I'm not getting the wear I'd like with these and will probably scrap them out in another 15,000 miles. I hate to say it but those Michelins do get the job done, just not real pretty are they? I'm looking at Goodrich Mud Terrain's (sticking with load range E also) next, can"t stand getting stuck in 4 inches of mud, these diesels are pretty heavy. I have the Toyo's on one of my gas plow trucks, seems to be doing well for the first 8000 miles, good in snow too.
Kevin