I swapped the stockers for some 225/255 Continental DW (summer) Extra-Load tires..
I have to say, the ride is more "comfortable" but I miss the sportier feel from the less "comfortable" stock tires. The turn in is garbage now, but I have gotten used to the ride and bumps are much less noticeable now..
2009 BMW 135i Alpine White.. Auto w/ Steptronic.. Purchased 3/29/2011.. MODS: COBB Accessport, CP-e catback, flat black kindney grills, ///M pedals, LUX V3, Trailer Hitch, Thule Hitch Mounted Bike Rack..