I decided to downsize my GTI from its OEM 18 wheels with Pirelli P Zero Nero tires to 17 Enkei Fujins with the Continental DWS from TireRack. The roads in my area are horrible (both local city streets and sections of freeway I drive daily). The 18s with the Pirellis performed well on weekend drives into the hills, but really didn't work for me otherwise.
The ride on my new Continental DWS setup is substantially smoother. The ride is no longer jarring and my daughter now stays put in the back seat when we go over bad sections of freeway (uneven expansion joints, overpasses with huge downward dips where the land based road and overpass meet). It is not good when your passengers catch air while riding in your card at normal freeway speeds.
I added Koni FSDs a few months back and they did help the ride on the 18s. On the 17s with the Continental DWS it is even smoother, but as expected less stable and sharp (little bit of bobbing going on), though the tires alone are not to blame for that. I did experience driving the GTI with the FSDs with 18 Michelin Pilot Super Sports, so I know how great the car can handle with the right setup (though I'm sure lots of folks have it dialed in better than me). Too bad the ride quality did not work for me.
Overall, I got what I asked for from the Continental DWS: Smooth ride and decent handling. It hasn't rained yet, so I cannot comment on that. I'm happy, but do notice the GTI lost a bit of its fun demeanor. It is an OK trade to make it a liveable daily driver. I'd possibly buy the DWS again depending on how they do once it starts raining.