I dunno about now, but Michelin used to compensate owners who'd had _tread_ cracks develop in the first few years of ownership. I'm not sure, but I think the problem was limited to the LTX line of tires. I know of several past posters on the class B forum who had this problem, and were compensated. I can't recall if the compensation was a large percentage off on new Michelins, or something else.
Personally, I've proved to my absolute satisfaction that LTX's soft sidewall contributed to vague wandering steering on two prior class B's. They're just not a great tire for tall, high-center-of-gravity, SRW vehicles. Dunno about one with duals. The XPS Ribs don't have either issue.
Jim, "Guns don't kill people. Husbands who come home early kill people."