The concept

The tire inflation pressure is measured in the four mounted tires. The system notifies you if there is a significant loss of pressure in one or more tires.

    See also:

    Safety
    Both the coupe and convertible have front airbags plus side-impact airbags built into the front seats. As required of all 2012 models sold in the U.S., the 640i has standard antilock brakes and an ...

    Intermittent operation or rain sensor
    The concept The rain sensor automatically controls the time between wipes depending on the intensity of the rainfall. The sensor is located on the windshield, directly behind the interior rearv ...

    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 ...