BMW Z4, Owner'S Manual

Page: 271 / 330

Possible driving range with a
depressurized tire
The distance for which it may be possible to
drive safely varies depending on how the vehicle
is loaded and used, e.g., speed, road conditions,
external temperature. The driving range may be
less but may also be more if an economical driv‐
ing style is used.
If the vehicle is loaded with an average weight
and used under favorable conditions, the dis‐
tance for which it may be safe to drive may be up
to 50 miles/80 km.
Vehicle handling with damaged tires
Vehicles driven with a damaged tire will handle
differently, potentially leading to conditions such
as the following:
▷ Greater likelihood of swerving off course.
▷ Longer braking distances.
▷ Changed self-steering properties.
Modify your driving style. Avoid abrupt steering
maneuvers or driving over obstacles, for instance
curbs or potholes.
Final tire failure
Vibrations or loud noises while driving can indi‐
cate the final failure of a tire.
Reduce speed and stop; otherwise, pieces of the
tire could come loose and cause an accident.
Do not continue driving. Contact a dealer’s serv‐
ice center or another qualified service center or
repair shop.
System limits
Temperature
The tire inflation pressure depends on the tire's
temperature.
Driving or exposure to the sun will increase the
tire's temperature, thus increasing the tire infla‐
tion pressure.
The tire inflation pressure is reduced when the
tire temperature falls again.
These circumstances may cause a warning
when temperatures fall very sharply.
Following a temperature-related warning, the tar‐
get pressures are displayed on the Control Dis‐
play again after a short distance.
Sudden tire pressure loss
The system cannot indicate sudden serious tire
damage caused by external circumstances.
Failure performing a reset
Tires with special approval: the system will not
function correctly if a reset was not performed,
for example a flat tire may be indicated although
the tire inflation pressures are correct.
Malfunction
Message
The yellow warning light flashes and is
then illuminated continuously. A Check
Control message is displayed. It may not
be possible to identify tire pressure losses.
Measure
▷ A wheel without TPM wheel electronics, such
as an emergency wheel, is mounted: have
the wheels checked, if needed.
▷ Malfunction: have the system checked.
▷ Interference caused by systems or devices
with the same radio frequency: after leaving
the area of the interference, the system auto‐
matically becomes active again.
▷ For tires with special approval: the system
was unable to complete the reset. Perform a
system reset again.
Declaration according to NHTSA/
FMVSS 138 Tire Pressure
Monitoring System
Each tire, including the spare (if provided) should
be checked monthly when cold and inflated to
Seite 271
Wheels and tires
MOBILITY
271
Online Edition for Part no. 01402779113 - II/19