I changed up to 1100/22.5s from the 295s as they are more common to get anywhere and the price is cheaper. Since they are a truck size they have a bigger turnover so fresher date codes. They are about 1 inch bigger in diameter but my coach handled them well as far as clearance issues are concerned.
Odd. I put Continental 11R22.5's on my rear axle to replace 295/80's and the size is near identical. Just 4 revs/mile difference. Are you sure you weren't replacing 295/75
's? That would be a greater difference.
11R's are a bit narrower as well, and the max load capacity is somewhat less. They are fine for my rear axle where I carry only 5000 lbs/tire, but comeup short on the front. I would need to use 12R's on the front to get enough load capacity, so I stay with 295/80 there.