The concept
The tire inflation pressure is measured in the four mounted tires. The system notifies you if there is a significant loss of pressure in one or more tires.
See also:
Entering a phone number
Dialing a number
When entering phone numbers, you can switch
between entering letters and numbers.
Service numbers can be entered more easily,
e. g. 1-888-BMW-CARD.
1. "Telephone".
2 ...
Adjusting the volume
Turn the knob until the desired volume is selected.
The setting is stored for the remote control
currently in use. ...
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 ...