Tire tread
Summer tires
Do not drive with a tire tread depth of less than 0.12 in/3 mm.
There is an increased danger of hydroplaning if the tread depth is less than 0.12 in/3 mm.
Winter tires
Do not drive with a tire tread depth of less than 0.16 in/4 mm.
Below a tread depth of 0.16 in/4 mm, tires are less suitable for winter operation.
Minimum tread depth

Wear indicators are distributed around the tire's circumference and have the legally required minimum height of 0.063 in/1.6 mm.
They are marked on the side of the tire with TWI, Tread Wear Indicator.
See also:
Performance Control
Performance Control enhances the agility of
your vehicle.
To enhance performance during sporty driving,
the rear wheel on the inside of the curve is
braked while the resulting braking effect is
...
Active seat
Active adjustment of the seat cushion's contours
reduces muscular tension and fatigue to
help prevent lower back pain.
Press the button. The LED
lights up. ...
Front
Active seat ventilation
1. Seat heating
2. Active seat ventilation
Press button 1 or 2 once depending on the temperature
or ventilation position. The LED in the
respective button lights up.
...
