BMW M3 SEDAN Owner's Manual page 328

MOBILITY
Tire chains
Safety information
Warning
With the mounting of snow chains on unsuita‐
ble tires, the snow chains can come into con‐
tact with vehicle parts. There may be a risk of
accident or risk of damage to property. Only
mount snow chains on tires that are designated
by their manufacturer as suitable for the use of
snow chains.
Warning
Insufficiently tight snow chains may damage
tires and vehicle components. There may be a
risk of accident or risk of damage to property.
Make sure that the snow chains are always suf‐
ficiently tight. Re-tighten as needed according
to the snow 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.
Use
Use only in pairs on the rear wheels, equipped
with the tires of the following size:
▷ 275/35 R 19.
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.
328
Wheels and tires
Online Edition for Part no. 01405A1E4B0 - X/20
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
Concept
The system monitors tire inflation pressure in the
four mounted tires. The system warns you if
there is a loss of pressure in one or more tires.
General information
Sensors in the tire valves measure the tire infla‐
tion pressure and tire temperature.
Using the tire settings in iDrive, the system can
automatically compare the specified target pres‐
sures with the actual tire inflation pressures.
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
take over the actual tire inflation pressures as the
target pressures.
When operating the system, also note the infor‐
mation found in the Tire inflation pressure chap‐
ter.
Additional information:
Tire inflation pressure, refer to page 316.