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:
Buttons at a glance
Buttons at a glance
1 System on/off, interrupt
2 Resume speed
3 Store speed
4 Reduce distance
5 Store, maintain/change speed
6 Increase distance ...
Breaking-in period
General information
Moving parts need to be broken in to adjust to
each other.
The following instructions will help achieve a
long vehicle life and good economy.
Engine and differential
Always ...
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 ...
