I replaced all 4 of the OEM tires on my 2003 Carrera with the DWS's and it is like night and day. The tire noise is almost gone. The OEM's were very noisy. Talking on a phone was difficult before. On two sets of OEM rear tires I averaged about 11,000 miles before needing new rubber. On these Continentals I measured the tread depth before a 2,000 mile trip and after returning home I could not measure any change in tread depth. I can tell no difference in performance on the Continental DWS's. Even if I get only half the advertised tread life it will still be double the OEM tires. I plan on ordering a set for my Cayman in the Spring.