BMW Motorrad K 1600 B Grand America, Rider'S Manual

Page: 155 / 304

The desired riding mode is ini-
tially preselected. The mode
change does not take place until
the systems in question are all in
the appropriate state.
The selection menu does not
disappear from the display un-
til the mode change has taken
place.
Tyre pressure
monitoring (RDC)
with tyre pressure control
(RDC)
OE
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 switch 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 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.
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
service station 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. The
warmer the tyres, the more the
tester value exceeds the display
value.
Pressure adaptation
Compare the RDC readings
on the multifunction display
with the value in the table on
the inside cover of the Rider's
Manual. Then use the air line to
compensate for the difference
between the RDC reading and
the value in the table.
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153
z Engineering details