I drive 3 to 4 thousand miles a year. I am replacing 5 year old Michelin XZE 255/70/22.5. The Winn. D.P. calls for 255/80/22.5. 80s are not as easy to replace on the road 70s run fine. Looking at HER...
I think if I had 22.5s on a MH, when they got to 3-4 YO I would start looking for a OO or small company that was running that size on their trucks. Talk, you might get some boot on a swap for some that have 50% tread. More years before tires age out, and still never wear out the tread.