Tyre Pressure Monitoring; (Rdc) - BMW R 1200GS Rider's Manual

Tyre pressure
monitoring (RDC)
with tyre pressure monitoring
OE

(RDC)

Function
A sensor integrated into each
tyre measures the air tempera-
ture and the air pressure inside
the tyre and transmits this in-
formation to the control unit.
Each sensor has a centrifugal-
force tripswitch that does not
enable transmission of the meas-
ured values until the motorcycle
has accelerated to above approx-
imately 30 km/h for the first time.
--
The display shows
tyre until the tyre-pressure signal
is received for the first time. The
sensors continue to transmit the
measured-value signals for ap-
proximately 15 minutes after the
vehicle comes to a stop.
An error message is issued if
wheels without sensors are fit-
ted to a vehicle equipped with an
RDC control unit.
Tyre-pressure ranges
The RDC control unit differenti-
ates between three tyre-pressure
ranges, all of which are paramet-
erised for the motorcycle:
Tyre pressure within permitted
tolerance.
Tyre pressure close to limit of
permitted tolerance.
Tyre pressure outside permit-
ted tolerance.
Temperature
compensation
Tyre pressure is a temperature-
for each
sensitive variable: pressure in-
creases as tyre temperature rises
and decreases as tyre temper-
ature drops. Tyre temperature
depends on ambient temperature
as well as on the style of riding
and the duration of the ride.
The tyre-pressure readings
shown by the multifunction
display are temperature-
compensated; the reference tyre
temperature for these readings
is always 20 °C. The air lines
available to the public in petrol
stations and motorway service
areas have gauges that do not
compensate for temperature; the
reading shown by a gauge of
this nature is the temperature-
dependent tyre pressure. In
most instances, therefore, these
gauge readings will not tally with
the pressures shown by the
multifunction display.
Pressure adaptation
Compare the RDC readings on
the multifunction display with
the value in the table on the
back cover of the Rider's Manual.
Then use the air line at a service
station to compensate for the dif-
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