Originally Posted by cncmastr
While that may be true about the snow, you are completely ignoring the fact the summer tires are not designed and made for cold/freezing temperatures. The compound becomes as hard as a hockey puck in freezing temps and will loose traction.
+10000! I had the M3 out in the cold with a bit of rain/sleet and it was LOOSE. A set of winter rubber seems like cheap insurance to me. Especially if you will drive the car daily in the cold months.