As I am sure the rest of you have found, the only near-winter fitment for the 5BW is a set of Cooper Zeon All-Seasons, but those aren't highly rated for any sort of snow use. I suppose at least they are usable under 32F, unlike the PS4S.
I have run the Michelin Pilot Alpin PA4s for the last few winters and they are amazing in anything up to and including a dusting of snow. Haven't tried them when it's deeper.
Tire Rack will have more wheel fitment info once they get a car to scan. Their HQ is in South Bend, IN, and if we have any volunteers, the sales department can set up a time with engineering so that they can digitally scan brakes etc. to figure out fitments. They seemingly don't have any more tire info at this time than we do.