Having spent 5 days up at Winter Park, CO in February where every day there was about 2-5 inches of snowfall, and that the roads are primarily ice/snow packed with my all season Bridgestone Potenzas (which are an excellent 3 season tire), I quickly made the investment to put on the Michelin Alpins PA3 based upon reviews here. I'm back up here at Winter Park with these set of tires and there has been a significant difference - no sliding, excellent braking, and not once has my electronic stability control warning indicator come on. There are many steep, icy, snow pack hills, which these tires handle very well going up and coming down (reasonable speeds about 30 MPH). Previously my Bridgestone Potenzas would be sliding all over the place. I'm a believer.