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:
Overview, instrument cluster with enhanced features
1. Messages, e.g. Check Control
Time
Date
2. Range
3. Computer
4. Navigation display
Service requirements
Miles/trip miles
5. Selection list, for instance radio
Current fuel consumpti ...
LATCH child restraint fixing
system
LATCH: Lower Anchors and Tether for CHildren. ...
Adjusting
Vehicle
Equipment
...
