First I have to say I still have the stick tires and I am still debating on getting winter tires or not. With that being said I was fairly impressed with the stock tires in the snow so far, we got about 8 inches this week and it went through very nicley, especially compared to my Grand Prix GTP. I did notice the lights dim a bit when the traction control kicks on. Has anybody driver their Bu with stock in the snow and then changed to winter tires? How big of a difference did it make?