The DWS06 Plus is also a very solid performance all-season tire. While I would personally take the AS4 over it, you really can't go wrong with either. The overall rolling diameter difference from the stock tires to our recommended 235/45-17 is pretty negligible. All of our tire size recommendations are calculated to be within 3% of the OEM tire size overall rolling diameters to ensure there are no drivability or wheel speed issues. You shouldn't really notice a difference in gearing.
On another note, I recently posted an article on our website blog that goes over everything you need to know for running a reverse staggered setup on a MK7 Golf/GTI/R. The article is based around my interview with Brian Smith, the lead driver for Easthood Racing, who currently runs a reverse staggered SM-10 setup on his race prepped MK7 GTI. You guys can check out the article via the following link:
Everything You Need To Know About Running A Reverse Staggered Setup
Enjoy!
-Geirsen