Mobility
To ensure that you remain mobile at all times, this chapter supplies you with important information on the topics of fuels and lubricants, wheels and tires, service, maintenance, and Roadside Assistance.
See also:
Vehicle care
Car care products
BMW recommends using cleaning and care
products from BMW, since these have been
tested and approved.
Car care and cleaning products
Follow the instructions on the container.
...
Vehicle equipment
This Owner's Manual describes all models and
all standard, country-specific and optional
equipment that is offered in the model series.
Therefore, in this Owner's Manual, equipment is
also desc ...
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 ...