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 marks
Knowledge of the labeling on the side of the tire makes it easier to identify
and choose the right tires.
Tire size
Speed code letter
Q = up to 100 mph or 160 km/h
T = up to 118 mph or 190 km/ ...
Installing child restraint fixing
systems
Before mounting
If the rear seat backrests are adjustable:
Before mounting child restraint fixing systems,
return all of the rear seat backrests to the basic
position.
Notes
Manufacturer's in ...
Under the Hood
BMW's inline-six-cylinder engine makes 230 horsepower and 200 pounds-feet of
torque in the 128i. It works through a six-speed manual or a six-speed
automatic. The automaker says a stick-shift 128i ...