I have winter experience with the Pirelli Scorpion Snow and Ice tires on 18's. I am very happy with them. They are priced very well. Might be worth a look: http://www.tirerack.com/tires/tires....1=yes&place=36

I will add that even on the highway and curvey roads, they do very well. Nice feeling on the turns and not that noisy like many winter tires.