275/35 with et22 will fit with KW Clubsports. Not sure if KWV3's have less clearance. There is only a few millimeters of clearance with those sizes in Michelin Super Sports and Clubsports.
As far as the rear... 285/35 is probably the best option. Unfortunately very few tires are available in 295/35 sizing and an et20 is probably too aggressive for 295's anyway.
KW Clubsport 3-way, Akrapovic Evolution, ESS Tune, StopTech Trophy, IND Euro Bumper & Black Mirror Covers, Turner Motorsports Studs/Lugs & Delrin Diff Bushings, MRF Solid Sub-Frame Bushings, RD Sport Sways, Recaro Profi-XL & Planted Seat Brackets, BMW Performance Carbon Fiber Interior Trim, BMW Edition Grills/Gills, Mode Carbon GT4 Splitter & GTS Wing, Advan TC3 (18x9.5/10.5), BBS E05 (18x10/11), G-Force Rivals (275/295)