See also:

Tire inflation pressure values up to 100 mph/160 km/h
740i, 740Li, 750i, 750Li 760Li 750i xDrive, 750Li xDrive ...

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. ...

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. ...