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 ...

Load
The maximum load is the sum of the weight of the occupants and the cargo. The greater the weight of the occupants, the less cargo that can be transported. ...

Driving stability control systems
Your BMW has a number of systems that help to maintain the vehicle's stability even in adverse driving conditions. Antilock Brake System ABSABS prevents locking of the wheels during braking. Sa ...