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:
Indicator/warning lamps
The indicator lamp flashes: DSC controls
the drive forces and brake forces.
The indicator lamp lights up: DSC has
failed. ...
Performance
What sets the 5 Series wagon apart from the A6 and E-Class is the way it
drives. Sure, its looks scream BMW inside and out, but so does the sweetly
smooth acceleration coming from the twin-turbo s ...
Last destinations
At a glance
The destinations previously entered are stored
automatically.
The destinations can be called up and used as a
destination for destination guidance.
Calling up the last destination
...
