I was blown away when I saw a tire rental place a few months ago. But the place was also renting rims too, so I assumed people were renting the tires to go with the rims that they couldn't afford to buy outright...
At least with furniture, I understand people may rent it while they're staging a house, or if they know they're only going to be in a location for a short temporary stay (i.e., military). But tires? It just makes no sense to me.