I am reposting most of this from the Mid-Atlantic sub forum. I have the summer performance 21s and today was awful. We had a couple of inches of snow but the car was very erratic. I got up a hill ok, but couldn't get the car moving after stopping at a light. Flat road, the car would only go sideways. I eventually got it far enough off the road to be safe, but sat there for about 10 minutes rocking it back and forth, but could not get it moving. Finally, I turned OFF traction control, and like magic, I was moving again. I seen many posts about this great traction control system in the car, but I think it was kicking in way too soon, and not letting the car move. I left it off, all the way home. The odd thing was that the car seemed to continuously pitch left while driving, with T/C on or off. Got me thinking of selling my + for a D.