Are those the same as the ASA JH3 wheels TR used to sell? Friends run those for the winter on their cars -- '03 530i and '03 Lexus LS430. I also had them on my (recently-totaled) '07 335i. VERY easy to keep clean, and I liked being able to see through the spokes so easily and see all the brake hardware. And the M3 hardware is even nicer to look at.
FWIW, I had the Dunlops on my 335i, and the car was awesome in ice & snow.
Are there other winter wheels people have seen? The Sport Editions seem to be the only thing I can find.
2014 F10 M5
Threes: '08 E90 M3, '07 E92 335i,
Fives: '11 F10 550i, '02 E39 M5, '00 E39 540i/6, '97 E39 528i, '92 E34 525i
Others: VW, MBz, Peugeot, Toyota, Olds