BMW 4 Coupe Series Manual page 328

MOBILITY
Reset the Tire Pressure Monitor again.
Replace the faulty tire and the sealant bottle of
the tire repair set promptly.
Additional information:
▷ Run-flat tires, refer to page 335.
▷ Tire pressure monitor, refer to page 328.
Tire chains
Safety information
Warning
With the mounting of tire chains on unsuitable
tires, the tire chains can come into contact with
vehicle parts. There may be a risk of accident
or risk of damage to property. Only mount tire
chains on tires that are designated by their
manufacturer as suitable for the use of tire
chains.
Warning
Insufficiently tight tire chains may damage tires
and vehicle components. There may be a risk
of accident or risk of damage to property. Make
sure that the tire chains are always sufficiently
tight. Re-tighten as needed according to the
tire chain manufacturer's instructions.
Fine-link tire chains
The manufacturer of the vehicle recommends
the use of fine-link tire chains. Certain types of
fine-link tire chains have been tested by the
manufacturer of the vehicle and recommended
as road-safe and suitable.
Information regarding suitable tire chains is avail‐
able from a dealer's service center or another
qualified service center or repair shop.
328
Wheels and tires
Online Edition for Part no. 01405A392C9 - VI/21
Use
Use only in pairs on the rear wheels, equipped
with the tires of the following size:
▷ 225/45 R18.
The wheel size and rim offset are located on the
inside of the wheel.
Follow the tire chain manufacturer's instructions.
Do not initialize the Flat Tire Monitor after
mounting tire chains, as doing so may result in
incorrect readings.
Do not reset the Tire Pressure Monitor after
mounting tire chains, as doing so may result in
incorrect readings.
When driving with tire chains, briefly activate Dy‐
namic Traction Control DTC to optimize the
drive power.
Maximum speed with tire chains
Do not exceed a speed of 30 mph/50 km/h when
using tire chains.
Tire pressure monitor
Principle
The Tire Pressure Monitor monitors the tire
pressure and issues a warning if the tire pressure
has dropped.
General information
Sensors in the tire valves measure the tire infla‐
tion pressure and tire temperature.
The system detects the mounted tires automati‐
cally. The system displays the predefined nomi‐
nal pressure values on the Control Display and
compares these values to the actual tire pressure
values.
If tires are being used that are not specified on
the tire inflation pressure details on the vehicle,
such as tires with special approval, the system
needs to be actively reset. The system will then