See also:

Tire inflation pressures X5 xDrive50i with three rows of seats
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Displays in the instrument cluster
Desired speed ▷ The marking lights up in green: the system is active. ▷ The marking lights up in orange: the system has been interrupted. ▷ The marking does not light up: ...

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 ...