These tires are a good match for me.
1) My DWS are not as responsive as the OEM which dulls the Speed3 torque steer and reduces some of the steering corrections (?necessitated by surface bumps?).
2) The Speed3 has little sound isolation, and Tire Racks testing demonstrates that the DWS is the quietest tread on concrete highways which are increasingly prevalent. I found the tread so quiet that concrete road noise is less than engine+wind noise at all speeds!
3) My 2010 Speed3--(my neighbors 2012 feels a little more refined)--has next to no shock absorption; and the DWS is significantly smoother than OEM, but I still my $$$ German cars.
4) Efficiency (combined city highway) immediately improved from 28 to 31 (10%) upon switching
tires and wheels. Rolling resistance and weight are likely the factors (24+21 to 19.1+18). My car definitely feels quicker.
5) The DWS in 1.5 Rocky Mtn Winters have proven very sufficient for me. And they are performance rated for my high speed, high-g driving (when conditions permit) unlike dedicated Winter tires which are faster wearing and less efficient.
I drove the OEM (Dunlop SP Sport 2050) tires 20,000 miles. They had maybe 5,000 miles remaining
when I replaced them.
I would buy DWS for this car again, but in a size (225/45R17) closer to the original. I got 205/55R16 to maximize Winter, mpg, and sidewall. OEM sidewall is so short, a 1 steel plate cut into my and wheels and tires, and a 1 rise to my driveway felt like sledgehammer. I like avoid breaking on off-ramps. 205mm-wide DWS unfortunately have me sliding some at 30 mph on tight turns when the 225mm-wide OEM allowed me 40 mph without any sign of slip. I have slid the rear DWS in many turns, and have squealed the fronts during many starts, not trying to.
OEM tread noise was horrendous when new, and then worsened. Radio vol@ 45 to hear over concrete hwy. Other surfaces were quieter but even on smooth asphalt @75 mph when tires were new, I could barely hear cell phone ...