Here is a review from member CREAMINZ when he got the Swift conversion on his KW Variant i think 3....
http://www.e90post.com/forums/showth...reaminz+visits
"First thing I noticed was how smooth my car felt on the road. Even at same identical settings with both CS springs & Swift springs, I could tell right away that these Swift Springs felt superior. Body roll seems to be reduced a bit and dispite of the better/comfortable ride quality, car felt even tighter around the corners!"