I have had Michelins XRV and I now have Toyo's. I never had any problems with the Michelins but they were the softer XRV strictly designed for motorhomes. They lasted five years before they started getting small side wall cracks believe it is called checking.
Then I bough Toyo tires and they lasted another five years and they also started to get some cracks on the side walls. But the only difference between the Michelins and the Toyo's was that Michelin would not pro rate for a new set. While Toyo was more then glad to knock off a couple of thousand for the six tires. And I believe they both ride just as smooth. Not sure if the Toyo tires are truck tires, but even if they were I can not tell the difference in the ride factor. Only thing I can say is that they do not blow up as easy as the XRV tires were on the Michelins.