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:
Tire Identification Number
Tires with DOT codes meet the guidelines of the
U.S. Department of Transportation.
DOT code:
DOT xxxx xxx 3410
xxxx: manufacturer code for the tire brand
xxx: tire size and tire design
3410: ti ...
Interior
Where BMW has always done things right is on the inside. Sliding into the
driver's seat — my test car had the optional contour seat package, a $1,200
option — is akin to being let into a room at t ...
Issued warning
If you leave the lane and if a lane marking has
been detected, the steering wheel begins vibrating.
If the turn signal is set before changing the lane,
a warning is not issued. ...