Mine are a different size than yours, but I changed from Michelin 275/80R 22.5 to Toyo 295/75R 22.5. When the tire company changed them I had to use powder in the front as the axle holes were too large for their balancer. The rears were fine. The company did not give me any grief about mounting. The difference in the tire size was negligible but you can tell a difference. I switched because of what I read about the Michelin sidewalls and I have a 2011 F350 ford that came with Michelins and the walls have separated on two of them already. I was reluctant to go with Toyos, and don't have any miles to compare. Ordered from Amazon and had them installed locally in Tucson.
Will and Maria
2005 Winnebago Vectra 40AD