Hi Quickbeam. Right now still on rain slicks. (700cX23) Once we get into a more snowy pattern, I'll switch to CX tires. (700cX30/32 knobbies) I am also thinking about picking up a set of Nokkian 106's for when I have to deal with snow pack and ice. Most of the time around here the snow is not on the ground for long so have not shelled out the cash for the Nokkians.

Be sure to check out the WINTER CYCLING FORUM here on Bikeforums. Tires have been discussed quite a bit. Also, there are several Twin City winter commuters who are willing to give you specifics for the harsh Minnesota winter.

Good luck and enjoy the winter commuting season.