Tire identification marks
Knowledge of the labeling on the side of the tire makes it easier to identify and choose the right tires.
See also:
Switching the interior lamps on and off
Switching the interior lamps on and off
Press the button.
To switch off permanently: press the button for
approx. 3 seconds.
To clear this setting: briefly press the button. ...
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 ...
Changing wheels
Your BMW is equipped with run-flat tires as standard. This eliminates the need
to change a wheel immediately in the event of a puncture.
For information on continuing to drive with a damaged tire, ...