I am finding Winters are very good in this cold weather (with no ice / snow)...feel much more sticky than summers .
I got 10% off mine with a man dealer, but you will have to store them your self. Look on eBay as well, as one dealer has the offered on their. I used this to get a price match
M6 & Family 5er
M2 & M4 CP Vert arriving in June