I recently re-tired my coach with Michelin XZA 255/80R-22.5's The set cost me approx. $3,600, or $1,200 per pair with the FMCA discount. I saved about $200 per tire with the program. The price you got quoted for a pair mounted and balanced seems pretty good. Be sure to check the date codes as you don't want anything older than 6 months and preferably a lot newer.