Bought for a ski trip in Colorado. We have a front wheel drive Kia Sportage with summer tires and I knew at some point on our journey I would probably need more traction. Sure enough, on the way home via Monarch Pass, the road was closed to cars without winter tires, four-wheel drive, and chains. Put them on and they did a great job of getting you through the pass in the whiteout. I saw other cars cruising along the side of the freeway, but we kept chugging along.