See also:

Remove attached partsfollowing use
Remove auxiliary mirrors, roof or rear luggage racks which are no longer required following use. Attached parts on the vehicle impair the aerodynamics and increase the fuel consumption. ...

Adjusting
Vehicle Equipment ...

Tire inflation pressure values over 100 mph/160 km/h
528i Without high-speed tuning feature 550i Without high-speed tuning feature With high-speed tuning feature 528i xDrive Without high-speed tuning feature With high-speed tuning ...