The concept
The system does not measure the actual inflation pressure in the tires.
It detects a pressure loss in a tire by comparing the rotational speeds of the individual wheels while moving.
In the event of a pressure loss, the diameter and therefore the rotational speed of the corresponding wheel change. This is detected and reported as a flat tire.
See also:
Text messages
Calling the sender of a text message
1. Select the desired message.
2. Select the symbol.
Saving the sender in the contacts
1. Highlight the desired message.
2. Open "Options".
3. &quo ...
General information
▷ Instructions for voice activation system
▷ When making a destination entry by voice,
you can change between voice operation
and iDrive.
▷ To have the available spoken instruc ...
Under the Hood
The 640i is powered by a 315-horsepower, turbocharged 3.0-liter six-cylinder
engine. Its peak torque rating is 332 pounds-feet. BMW cites a zero to 60 mph
time of 5.5 seconds for both the coupe an ...