BMW X1 Owner's Manual page 327

chains, otherwise incorrect values may be dis-
played.
If your vehicle is equipped with a Flat Tire
Monitor, note the following: Do not initialize the
Flat Tire Monitor when using snow chains, oth-
erwise incorrect values may be displayed.
When using with snow chains, activate drive-
off support to optimize the drive power as nec-
essary.
Maximum speed with snow chains
When using snow chains, do not exceed a
maximum speed of 30 mph/50 km/h.
Tire pressure monitor
Principle
The Tire Pressure Monitor monitors the tire
pressure and issues a warning if the tire pres-
sure has dropped.
The sensors in the tire valves measure the tire
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.
General information
When using tires not found in the tire infla-
tion pressure specifications on the vehicle, e.g.,
tires with special approval, the Tire Pressure
Monitor must 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 314.
Online Edition for Part no. 01405A8A536 - VI/23
Wheels and tires
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.
Make sure that the sizes of your mounted
tires are displayed correctly and match the
information on the tires and the tire inflation
pressure specifications on the vehicle.
Functional requirements
If the following requirements are not met for
the Tire Pressure Monitor, tire pressure losses
may not be reported reliably:
▷ 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.
Enter the information about the mounted
tires in the tire settings when the system
does not automatically detect the tires.
▷ The Tire Pressure Monitor does not acti-
vate until after driving for a few minutes:
▷ After a tire or wheel change.
▷ After a reset, when using tires with spe-
cial approval.
▷ After changing tire settings.
▷ When using tires with special approval,
note the following:
MOBILITY
327