See also:

Seat and mirror memory
You can store and call up two different combinations of driver's seat and exterior mirror positions. Settings for the backrest width and lumbar support are not stored in memory. Storing 1.&nb ...

System limits
Speed range Best results are achieved when using the system on well-developed roads and highways. The desired speed can be selected between 20 mph/30 km/h and 110 mph/180 km/h. The system can a ...

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 ...