E90 Suspension & Chassis Components: Suspension: Notes
The chassis and suspension of E90 represent a new step forward in the mid-size class, both at the front axle as well as at the rear axle. The front axle utilizes a double pivot spring strut axle (MacPherson strut) in aluminum.
BMW has used the double pivot spring strut front axle design in several models since its initial introduction. The double pivot spring strut front axle design has previously been used on all 5, 7 and 8 series vehicles and will now be used on the new 3 series.
On the E90 the front axle design will see the addition of a new reinforcing strut. The balancing components - control arm and tension strut mounts plus the engine and transmission mounts have also been modified for application on the E90.
The rear axle has been completely redesigned as a five-link axle.