My class A has a 22.5 tire all the way around, a friend at a trucking company (he buys loads of tires the same size that is on our motorhome) A Continental is $520 he will mount and balance free, ...
Mr. Devildog, you certainly could do the same and run the Ironman tires on the drive axle and the more expensive tires on the steer (don't know if you have a tag).
We, unfortunately, only can buy Michelins as they are the only manufacture that makes the 365 tire that we use on the steer and tag axles, we use 315's on the drive.