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:
Switching on/off
Press the button. ...
Interior
Where BMW has always done things right is on the inside. Sliding into the
driver's seat — my test car had the optional contour seat package, a $1,200
option — is akin to being let into a room at t ...
Correctly adjusted head restraint
A correctly adjusted head restraint reduces the
risk of injury to cervical vertebrae in the event of
an accident.
Adjusting the head restraint
Correctly adjust the head restraints of all
occu ...
