2006-2013 3-Series (E90, E91, E92, E93)
The E90 had broad appeal, and was BMW's highest selling model of the time and the highest selling luxury car in the US and Canada. It has multiple body styles and engine choices that offers a wide range of performance levels, including an M3 version.
To accommodate this variety of roles the E90 is equipped with a fully independent suspension including aluminium MacPherson struts in the front, and steel 5-link Multi-link suspension in the back. The E90's suspension was designed to accommodate very large, high performance front brakes with much more stopping power than rear.
Steel designed to provide high strength for casting applications allowed BMW to greatly reduce the weight and cost of the rear suspension. In addition, the rear axle can be completely pre-assembled and adjusted with the brake system and suspension.