BMW Motorrad ABS is unable to
counteract their effects.
Tire Pressure Control
TPC
OE
Function
A sensor is located in each tire,
which measures the air temper-
ature and the air pressure inside
the tire and sends these values
to the control unit.
The sensors are equipped with
a centrifugal controller, which
does not enable the transmis-
sion of the measured values un-
til a speed of approx. 20 mph
(30 km/h) is reached. Before ini-
tial reception of the tire pressure,
-- is shown in the display for
each tire. The sensors continue
to transmit the measured values
for approx. 15 minutes after the
motorcycle comes to a stop.
The control unit can manage four
sensors, and as a result two sets
of wheels with TPC sensors can
be driven. If a TPC control unit
is installed without the wheels
being equipped with sensors, an
error message is output.
Temperature
compensation
The tire pressures are shown
temperature-compensated in the
multifunction display; they re-
fer to a tire air temperature of
68 °F (20 °C). As the air-pres-
sure testers at filling stations
show a temperature-dependent
tire pressure, they do not match
the values indicated in the multi-
function display in most cases.
Air pressure ranges
The TPC control unit distinguish-
es between three air pressure
ranges matched to the motorcy-
cle:
Air pressure within the permis-
sible tolerance.
Air pressure at the limits of the
permissible tolerance.
Air pressure outside the per-
missible tolerance.
6
74
z
Technology in detail
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