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 ...

Switching on automatically
Select transmission position R with the engine running. The backup camera image is displayed if the system was switched on via the iDrive. ...

Using this Owner's Manual
The fastest way to find information on a particular topic is by using the index. An initial overview of the vehicle is provided in the first chapter. Updates made after the editorial deadline ...