I got 83,000 miles on these tires and they still looked decent. Tire shop said that the tires would probably just fail due to wear than the tread wearing out. I figures with 83,000 miles it was better to replace them for new tires than take a chance of a blow out on the highway. The tires are bullet proof; excellent handling, incredible wear, fantastic smooth ride. I replaced them with same tires since it made sense not to try anything different. Well, after 40,000 miles I got a freakin nail in my front right side near the sidewall that could not be repaired with a plug. I learned that with an AWD vehilce you need to replace all 4 tires and not just one or two as you can do with a front or rear wheel drive vehicle. I couldn't put out the $1K for the Michelin's I wanted so I ended up with some Dunlop's AT20. Not exactly the same quality so I'll see how these do in comparison to the Michelin's. Recommendation: if you can afford the LTX M/S, buy them, you will not be disappointed!