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:
The concept
DSC prevents traction loss in the driving wheels
when driving away and accelerating.
DSC also recognizes unstable vehicle conditions,
such as fishtailing or nose-diving. Subject
to physical lim ...
Tachometer
Always avoid engine speeds in
the red warning field. In this
range, the fuel supply is interrupted
to protect the engine. ...
Safety
Neither the Insurance Institute for Highway Safety nor the National Highway
Traffic Safety Administration has tested the 2007 X3. Standard safety features
include four-wheel-disc antilock brakes, ...
