I live in michigan. This proceedure, is for changing wheels, though, right?

Changing wheels would be easy, but to only have one set of wheels and change tires at each season was what I was worried about.

It would save me money by not getting those 15" wheels I was talking about - but every time I want to go from all seasons to azenis or the other way, I would be stuck with just one set of wheels and would have to take the tire off the wheel, mount the new one, and balance it (probably all at discount tire).

The conveniance of having two sets of wheels is what drawed me to that option, but I think I'll just keep one set of wheels for now. Mounting azenis on my current 16" wheels is sure to be worth that hassle.