17" wheels with all-season tires are a no cost option for the 135i. If you live in an area that gets significant snow, you will really need dedicated winter tires, all-seasons won't hack it (from experience). My dealer stores off-season tires for free if you buy winter wheel/tires from them. I got a good deal on a winter wheel/tire package when I factory ordered my 135i last March.
Last edited by Qunadry; 10-04-2012 at 12:09 PM.