Sorry I forgot to look at your X6 specs and saw that you have the 20" OEM performance run flats. I was told by my PA dealer that if I plan to drive up north a lot in the winter to go for the 19" all season with the sports package. Maybe he was wrong. My hat is off to you for dealing with the bitterly cold weather in Minnesota. Beautiful in the summer, but it does take a strong constitution to deal with that winter. Garrison Keillor loves to make jokes about the Minnesota winters in his books and radio show. I thought he was exaggerating, but then I had the "winter experience". Do you go ice fishing" I did it once when I taught up in Michigan, and somehow managed to fall in. Students were laughing their heads off. To add insult to injury, I only caught one three inch fish after standing out on the lake for two hours before putting my right leg into an open hole in the ice that had been snowed over. Best of luck to you with your amazing X6 (it is beautiful), and you do a fantastic job if keeping it clean.
It is wonderful to be back in the BMW fold. BMW people are much more interesting than the Mercedes crowd.