Aerodynamic optimisation of underside panelling
As the excellent drag coefficient (cd = 0.26) would suggest, the aerodynamics of the new BMW 3-Series have been intensively honed in a state-of-the-art wind tunnel. The optimised aerodynamics also have benefits for noise reduction and roadholding. In particular, streamlined design of the underside plays a big part in minimising lift forces. The BMW 3-Series' aerodynamically optimised underside - with extended streamlined panels at the sides, under the engine compartment shield and at the front part of the exhaust tunnel - provides unprecedented standards of sealing. Additional aerodynamic covers, which create a diffusor effect at the rear axle, further reduce drag and lift forces, while at the same time improving stone chip protection. Also, the front aprons are designed to create an "air curtain" effect which reduces turbulence in the wheel arch area - again reducing drag. The aerodynamically designed wheel arches, and the air deflectors in front of them, likewise help to reduce fuel consumption.
See also:
Tail lamps, bulb replacement
At a glance
1 Turn signal
2 Backup lamp
3 Inside brake lamp*
4 Tail lamp
5 Outside brake lamp
6 Rear reflector*
Turn signal, brake, tail, and license
plate lamps
Follow the general instruc ...
CD/multimedia
CD/DVD
When the same audio source (front CD/DVD
player, rear CD/DVD player, DVD changer) is selected
in the front and rear, the same material is
played.
Operation is the same as for the front ...
The concept
The system issues a two-phase warning of a
danger of collision at speeds above approx.
10 mph/15 km/h.
The collision warning is available even if cruise
control has been deactivated.
It resp ...