The title sorta' says it all. Does that work? More specifically, what are the implications of doing so, given that the rears are 245/40/17 as opposed to the 225/45/17 on my stock E46 328i sport model? Does it affect the proper alignment settings? Will the tires wear differently? How does it affect the handling? Also, if I keep one set for autoxing (on street tires) and the other set for daily use, are there issues with swapping back and forth?

As an aside, I'm wondering why the rears are 245/40, when it seems like they should really be 255/40 or something like that to maintain the same (or rather closer) sidewall height. Am I interpreting that wrong?

Thanks,
Dave