You said they are 22.5's.. Mitchlin XRV's are about 2700 dollars (WITH FMCA DISCOUNT) plus mounting and balancing.
Toyo about 2250 to 2400 Mounted and balanced at/by Belle Tire in Michigan. Mine have now been on for about 30 HOURS.. (That's yesterday's price).
The Toyos are not Exactly the same size. (Less than 1% difference in total outside diameter/circumference) but Well.. Same weight rating and fit perfectly.
My RV is 13 years old but I put a set of used XRV's on it last year when I blew one. then I blew one of those. I do not expect these to go BOOM any time soon.
Nice to have new shoes.