Tire size
Example: 255/55 R 19 107 V
255: nominal width in mm
55: aspect ratio in %
R: radial tire code
19: rim diameter in inches
107: load rating, not for ZR tires
V: speed rating, before the R on ZR tires
Speed letter
Q = up to 100 mph/160 km/h
T = up to 118 mph/190 km/h
H = up to 131 mph/210 km/h
V = up to 150 mph/240 km/h
W = up to 167 mph/270 km/h
Y = up to 186 mph/300 km/h
See also:
Volume
► "Speed volume": speed-dependent volume
control.
► "PDC": volume of the PDC signal compared
to the entertainment sound output.
► "Gong": volume of ...
Start/Stop button
The concept
Pressing the Start/Stop button
switches the ignition on or off and
starts the engine.
The engine starts if the brake
pedal is pressed when you press
the Start/Stop button. ...
Displays in the instrument cluster
1 Display of desired speed
2 Indicator lamp
3 Brief status display
Desired speed
Display in the speedometer:
The marking lights up in
green: the system is active.
The marking lights u ...