All my tires are on their own rims. They are all 30x9.5x15 Pro-Comp Mud terrains on 8" rims. At almost $2,000.oo CDN after I retire I wont be able to afford tires. That is why I am doing things the way I am.
Why not use the tires until they are worn out and instead of buying tires 2-3 times more often than you need to invest that money into mutual funds or something and then buy tires with that money in retirement?
Tires do have a finite life even if stored inside. They will dry rot over time.