See also:

Cruise control lever
1 To store the current speed or a higher speed 2 To store the current speed or a lower speed 3 To deactivate DISTRONIC PLUS 4 To store the current speed or to call up the last stored speed ...

Treadwear indicators
Narrow bars (tread wear bars) that are distributed over the tire tread. If the tire tread is level with the bars, the wear limit of 1/16 in (1.6 mm) has been reached. ...

Bead
The tire bead ensures that the tire sits securely on the wheel. There are several steel wires in the bead to prevent the tire from coming loose from the wheel rim. ...