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 ...

The concept
The system does not measure the actual inflation pressure in the tires. It detects a pressure loss in a tire by comparing the rotational speeds of the individual wheels while moving. In the ev ...

Roadside Assistance
BMW Roadside Assistance is available by phone around the clock in many countries. You can obtain support there in the event of a breakdown. ...