I live in Europe where the winters are harsh. The car that i drive daily has a little over 300hp, which requires a good responsive winter tire that can handle the winter conditions and the performance of the car. The Dunlap Winter SP 3D is the best tire for the price for winter driving. By checking the air-pressure every two weeks, good high speed balancing, and getting an alignment each season helps preserve the thread depth. I've tested many winter tires driving here in Europe on the Autobahn, secondary roads, and i would HIGHLY recommend these tires to anyone who would ask for my advice on a good set of winter tires.... 225/45R-17 Dunlop SP Winter Sport 3D XL.., of course!!