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 ...

2012 BMW 3 Series: Up Close
Of all BMW's cars, the 3 Series is the one that somehow escaped being hit by the Chris Bangle ugly stick, so I didn't go to the redesigned compact sedan's North American debut looking for sweet re ...

System limits
Speed range Best results are achieved when using the system on well-developed roads and highways. The desired speed can be selected between 20 mph/30 km/h to 110 mph/180 km/h. The system can al ...