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:
Warning triangle
The warning triangle is located in the cargo area. ...
For US customers
The following only applies to vehicles owned
and operated in the US.
If you believe that your vehicle has a defect
which could cause a crash or could cause injury
or death, you should immediate ...
The concept
The Check Control monitors vehicle functions
and alerts you to any malfunctions in the systems
monitored.
A Check Control message consists of indicator
and warning lamps in the instrument clust ...
