BMW SEDAN 3 Series 2023 Owner's Manual page 305

Use
Use is only permitted in pairs on rear wheels
equipped with the tires of the following wheel/
tire sizes:
Tire size Wheel size
225/50 R17 7.5J x 17
225/45 R18 7.5J x 18
Information on the wheel size and rim offset is
located on the inside of the wheel.
The list can also include wheel/tire sizes that
are only suitable for certain models.
Information about approved wheels and tires
for the vehicle can be requested from an au-
thorized service center or another qualified
service center or repair shop.
Follow the tire chain manufacturer's instruc-
tions.
If equipped with a Tire Pressure Monitor: with
tire chains, do not reset the Tire Pressure
Monitor, otherwise, incorrect displays may oc-
cur.
If the vehicle is equipped with a flat tire mon-
itor: with tire chains, do not initialize the flat
tire monitor, otherwise, incorrect displays may
occur.
When driving with tire chains, activate the Dy-
namic Traction Control briefly 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 pres-
sure has dropped.
Rim offset (IS)
30
25
Online Edition for Part no. 01405A5F6E0 - VI/22
Wheels and tires
General information
Sensors in the tire valves measure the tire in-
flation pressure and tire temperature.
Depending on the tires detected or registered,
the system displays the specified nominal
pressures on the control display and compares
them with the current tire pressures.
If tires are being used that are not specified
in the tire inflation pressure details on the ve-
hicle, such as tires with special approval, the
system needs to be actively reset. The system
will then take over the actual tire inflation pres-
sures as the target pressures.
When operating the system, also note the in-
formation found in the Tire inflation pressure
chapter.
Additional information:
Tire inflation pressure, refer to page 290.
Safety information
Warning
The display of the target pressures is not
a substitute for the tire inflation pressure de-
tails on the vehicle. Incorrect entries in the
tire settings can lead to incorrect target tire
inflation pressure values. In this case, it can-
not be guaranteed that the notification of a
tire pressure loss will be reliable. There is a
risk of injury and risk of damage to property.
Ensure that the tire sizes of the mounted tires
are displayed correctly and match the details
on the tires and on the vehicle.
Functional requirements
The following prerequisites must be met for
the system; otherwise, reliable notification of a
tire pressure loss is not assured:
▷ After each tire or wheel change, the system
detects and updates the mounted tires on
the control display and displays them after
a short trip.
MOBILITY
305