Let me state myself a little more basically...
Let's say I put my spare up on the roof because I need the space occasionally to haul gear, or just put my junk in the back. Now, I do this fairly often, say once a month or so. Most of the time though my Jeep is empty of cargo and quite possibly clean, as maybe I like to keep the paint maintained. Now, should I have to lug the tire up from the cargo bay to the roof every time I want to move something? That's a pain in the ass, even when you're talking a 215 it's still a pain.
You following my line here? Just becuase you see the vehicle without gear or whatever doesn't mean the never have it. I have my tire on a swing out carrier, but most times you see my Jeep the cargo area is empty. But I do wheel about once a month, and when I do the cargo area is just about full of gear, I wouldn't want to move my tire around every time I go wheelin', hell it's enough of a pain in the ass to load up my gear every time!
