BMW Z4 ROADSTER Owner's Manual page 288

MOBILITY
Vehicle handling with damaged tires
Vehicles driven with a damaged tire will han-
dle differently, potentially leading to conditions
such as the following:
▷ Greater likelihood of skidding of the vehicle.
▷ Longer braking distances.
▷ Changed self-steering properties.
Modify your driving style. Avoid abrupt steering
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 acci-
dent.
Do not continue driving. Contact an authorized
service center or another qualified service cen-
ter 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 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
target pressures are displayed on the control
display again after a short distance.
Sudden tire pressure loss
The system cannot indicate sudden serious
tire damage caused by external circumstances.
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Wheels and tires
Online Edition for Part no. 01405A88B63 - VI/23
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 al-
though 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 wheel electronics such as
an emergency wheel is mounted: have the
wheels checked, if needed.
▷ Fault 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.
▷ Tire Pressure Monitor malfunction: have
the vehicle checked by an authorized serv-
ice center or another qualified service cen-
ter or repair shop.
Declaration according to NHTSA/
FMVSS 138 Tire Pressure Monitoring
System
Each tire, including the spare (if provided)
should be checked monthly when cold and in-
flated to the inflation pressure recommended
by the vehicle manufacturer on the vehicle
placard or tire inflation pressure label. (If the
vehicle has tires of a different size than the
size indicated on the vehicle placard or tire
inflation pressure label, you should determine
the proper tire inflation pressure for those
tires.) As an added safety feature, the vehi-
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