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.
See also:
Tire inflation pressure X6 xDrive35i
...
Indication in the info display
The information from the onboard
computer is shown in the
info display in the instrument
cluster. ...
Tire Pressure Monitor TPM
The concept
The tire inflation pressure is measured in the
four mounted tires. The system notifies you if
there is a significant loss of pressure in one or
more tires. ...