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:
Entering appointment dates
Enter the dates for the required inspections.
Ensure that the vehicle date and time are set
correctly.
1. "Vehicle Info"
2. "Vehicle status"
3. "Service required"
...
Ventilation in rear
Ventilation in rear
1. Use the thumbwheels to smoothly open and
close the air vents
2. Thumbwheels to adjust temperature in upper
body region; can be adjusted separately
for left and right:
...
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 ...
