We are now on our second day of considerable snowfall here, and my new Dunlop WSport 3D winter tires are performing well. In fact, this is the first chance I have had to flog the 35i a bit in the snow, and the combo of the winter tires and the XDrive system work very well. Many roads have not seen the snowplows yet, so is a good test.
It is very capable in snow and on icey roads. I'm a happy camper.