I have a set of Michelin Easi Grips - just like snow chains but made from Kevlar and can be driven on once out of the snow, I also had a set of wheels with winter tyres (rear wheel drive car) since 07, as they were mandatory in Germany. Never yet had to resort to Easi Grips due to excellent winter tyres, all through those bad winters 10/11/12. Last two winters with my old rear wheel drive I used Cross Climates and never had to resort to winter set. Sold it three years ago with 250,000 miles on and bought a front wheel drive.