Tyre Pressure Monitoring; Rdc - BMW F 800 R 2013 Rider's Manual

momentum take over and even
6
BMW Motorrad ABS is unable to
counteract their effects.
66
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-
z
force tripswitch that does not
enable transmission of the
measured values until the
motorcycle has accelerated to
about 30 km/h. The display
--
shows for each tyre until
the tyre-pressure signal is
received for the first time. The
sensors continue to transmit
the measured-value signals for
approximately 15 minutes after
the motorcycle comes to a stop.
The control unit can adminis-
trate four sensors, so two dif-
ferent sets of wheels with RDC
sensors can be alternated on
the motorcycle. An error mes-
sage is issued if wheels without
sensors are fitted to a motorcycle
equipped with an RDC control
unit.
Temperature
compensation
Tyre pressure is a temperature-
sensitive variable: pressure in-
creases as tyre temperature rises
and decreases as tyre temper-
ature drops. Tyre temperature
depends on ambient tempera-
ture, 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 gauges
on forecourt air lines do not
compensate for temperature.
The tyre pressure recorded
depends on tyre temperature. In
most instances, therefore, these
gauge readings will not tally with
the pressures shown by the
multifunction display.
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