I don't know about you, but the last thing I would plan on doing is wrestling, or trying to, a 22.5" tire. My solution is a roadside service plan that takes care of those problems for, including new tire replacement, if needed. Besides, I don't know where I would put a spare like that on my rig. If you are dealing with a Class C, different story as there usually is a spare tire carrier under the aft end of the unit.