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 and convertible. The standard eight-speed automatic transmission includes steering-wheel-mounted shift paddles.
Other standard features include computer-controlled adaptive shock absorbers and Driving Dynamics Control, which allows the driver to adjust the ride quality, accelerator response, power-steering assist level and automatic transmission behavior.
Optional mechanical upgrades include active stabilizer bars and active steering, the latter of which adds rear-wheel steering to the earlier generation's variable-ratio front steering system.
See also:
Notes
The vehicle equipment does not include a spare
tire.
When using run-flat tires* or tire sealants, a tire
does not need to be changed immediately in the
event of pressure loss due to a flat tire ...
Malfunction
The yellow warning lamp flashes and
then lights up continuously. A Check
Control message is displayed. No flat
tire can be detected.
Display in the following situations:
A wheel without T ...
Note before adjusting
Do not adjust the seat while driving
Never attempt to adjust the driver's seat
while driving.
The seat could respond with unexpected movement
and the ensuing loss of vehicle control
could le ...
