This may sound strange, but I am actually considering picking up a set of Apex Arc-8's for winter wheel duty. They are nice 18" wheels, that come in satin black at a good price.
I use the ZCP wheels for summer, with 15mm spacers in front and 12mm spacers in the rear.
Now, I would like to use a set of Arc-8's that would accommodate the spacers (so that I am not taking them on and off each year).
I know that I would also prefer more narrow wheels for winter. I think 9.5" all around is probably as wide as I could go, but I see that there are 8.5" versions for the 3-series. Do you have a recommendation for some aggressive looking fitments for the 8.5" wheel on an M3 with the spacers I mentioned above? If not, what about for the 9.5" wheel?