BMW GRAN COUPE 4 Series Owner's Manual page 230

Mobility
If possible, do not drive at speeds less than
12 mph/20 km/h.
Correcting the tire inflation pressure
1. Stop at a suitable location.
2. Screw the connection hose onto the tire
valve stem.
3. Attach the connection hose directly to the
compressor.
4. Insert the connector into the power socket
inside the vehicle.
5. Correct the tire inflation pressure to
2.5 bar.
▷ Increase pressure: with the ignition
switched on or the engine running,
switch on the compressor.
230
Wheels and tires
Online Edition for Part no. 01402978272 - II/17
▷ To reduce the pressure: press the but‐
ton on the compressor.
Continuing the trip
Do not exceed the maximum permissible
speed of 50 mph/80 km/h.
Reinitialize the Flat Tire Monitor.
Reinitialize the Tire Pressure Monitor.
Replace the nonworking tire and the sealant
container of the Mobility System promptly.
Snow chains
Fine-link snow chains
The manufacturer of your vehicle recommends
use of fine-link snow chains. Certain types of
fine-link snow chains have been tested by the
manufacturer of the vehicle and recommended
as road-safe and suitable.
Information regarding suitable snow chains is
available from a dealer's service center or an‐
other qualified service center or repair shop.
Use
WARNING
With the mounting of snow chains on un‐
suitable tires, the snow chains can come into
contact with vehicle parts. There is a risk of ac‐
cidents or risk of property damage. Only mount
snow chains on tires that are designated by
their manufacturer as suitable for the use of
snow chains.◀
Use only in pairs on the rear wheels, equipped
with the tires of the following size:
▷ 225/50 R 17.
▷ 225/45 R 18.
Follow the snow chain manufacturer's instruc‐
tions.
Make sure that the snow chains are always
sufficiently tight. Re-tighten as needed ac‐