Do your own research? I only wish I had the lifespan and money to purchase several large motorhomes AND a set of Toyo tires for one, a set of Michelins for anothoer, a set of Hankooks for another, a set of Coopers for another, ...etc. Plus, hire the drivers and test facilities to do 10 years of testing.
I'm still a Michelin fan. THe main complaint I have is that they "age out" much quicker/sooner than they wear out.
I have Michelins on my cars and on my Dutch Star. I NEVER bought ANY of the XRV Michelins for any of my motorhomes. I have the XZE on my Dutch Star, they need to be replaced only because they have "old age" cracks on the sidewalls.