Most RVs need a heavier rated tire with more ozone protection.
Everyone, more or less, heads to the south the coach, the deserts etc, all very hot and intense sun. Covering tires once parked helps some. but the extreme heat causes stress on the thread and carcass and they won't to get loose and rub against each other. Then on tax axles and two or thrre or more axles towables, jacknifing in and out of spaces causes a lot of belt separation.
Most Motorhome may benefit for the next heavier rate tire in that size. of next size up. Low inflation,high heat, high speeds, and heavy load causes a lot of blowouts. Too much inflation can cause belt separations too.