When I had my Holiday Rambler DP (Monaco brand) with 22.5" tires, it came with Michelins and I had great wear and a great ride with them. When they reached the 7 year mark, I used the FMCA program to purchase new Michelins. According to the dealer, I could purchase the Michelins through the FMCA program cheaper than the dealer can pay for the same tire. You buy the tires directly from Michelin, they are shipped to the dealer who installs them and you only pay the dealer for their labor. You can certainly pay for your FMCA membership many times over for the money you save.
As I understand it, the FMCA Michelin program has expanded and is now covering all vehicle tires for trucks, cars, etc. in addition to the RV sizes.