Our last Chicago winter was fairly mild, but we did have several days of heavy snow and ice. These tires completely changed the performance ability of my rear drive Dodge Challenger which is my only car and is driven year round. The best example of how well this car behaved was on a late night driving uphill in heavy snow and ice. There were three seperate front drive cars on the side of the road that had given up getting up the hill because they had no traction. I was able to climb the hill with ease and even passed an SUV that was sliding and spinning its tires as it struggled to get over the steep hill.