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:
Front
Opening
Press on the cover.
Emptying
Place your finger in the depression next to the
ashtray, arrow, and push up at the same time.
The ashtray can be removed.
Lighter
Push in the lighter. ...
Aerodynamic optimisation of underside panelling
As the excellent drag coefficient (cd = 0.26) would suggest, the aerodynamics
of the new BMW 3-Series have been intensively honed in a state-of-the-art wind
tunnel. The optimised aerodynamics also ...
Mobility
To ensure that you remain mobile at all times, this
chapter supplies you with important information
on the topics of fuels and lubricants, wheels and
tires, service, maintenance, and Roadside
...
