I only had these tires a week, replaced one wheel due to vibration thinking that was the problem then replaced wheel and tire which did not correct the vibration issue either, at slow speeds you could feel the car bouncing as the tires rolled out of round. Upon further inspection by my local tire store they found one tire had a bulge forming near the bead. Put my factory wheels and tires back on ride was fine.
Sent all four back under the 60 day ride guarantee. Awaiting a replacement set of Continentals to arrive, hopefully they will be better then these DWS I had.