I have 10 E rated Michelins between the truck and trailer. It can get costly.
Michelin has a program with Family Motor Coach where one buys the tires directly from Michelin and have them mounted at a dealer of your choise.
Maybe Air Forums could strike a deal.
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles