Initialization
The initialization process adopts the set inflation tire pressures as reference values for the detection of a flat tire. Initialization is started by confirming the inflation pressures.
Do not initialize the system when driving with snow chains.
1. "Vehicle Info"
2. "Vehicle status"
3. 
"Reset"
4. Start the engine - do not drive away.
5. Start the initialization with "Reset".
6. Drive away.
The initialization is completed while driving, which can be interrupted at any time.
The initialization automatically continues when driving resumes.
See also:
Tire identification marks
Tire size
255/50 R 19 103 Y
255: nominal width in mm
50: aspect ratio in %
R: radial tire code
19: rim diameter in inches
103: load rating, not for ZR tires
Y: speed rating, before the R on ZR ...
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 ...
Resuming the original route
If the route section should no longer be bypassed:
1. "Navigation"
2. "Route information"
3. "New route for:"
4. "Remove blocking" ...