BMW R 1200 RT, Rider'S Manual

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Rear wheel lift
Under very severe and sudden
deceleration, however, under cer-
tain circumstances it is possible
that the BMW Motorrad Integ-
ral ABS will be unable to prevent
the rear wheel from lifting clear
of the ground. If this happens
the outcome can be a highsiding
situation in which the motorcycle
can flip over.
WARNING
Rear wheel lift due to severe
braking.
Risk of falling
When you brake sharply, bear
in mind that ABS control can-
not always be relied on to pre-
vent the rear wheel from lifting
clear of the ground.
What is the design
baseline for Integral ABS?
Within the limits imposed by
physics, the BMW Motorrad In-
tegral ABS ensures directional
stability on any surface. The sys-
tem is not optimised for special
requirements that apply under
extreme competitive situations
off-road or on the track. The
driving behaviour should be ad-
apted to actual driving skills and
the road conditions.
Special situations
The speeds of the front and rear
wheels are compared as one
means of detecting a wheel's
incipient tendency to lock. If
the system registers implaus-
ible values for a lengthy period
the ABS function is deactivated
for safety reasons and an ABS
fault message is issued. Self-dia-
gnosis has to complete before
fault messages can be issued.
In addition to problems with the
BMW Motorrad Integral ABS,
exceptional riding conditions can
lead to a fault message being
issued.
Heating up with the motorcycle
on the centre stand or an auxil-
iary stand, engine idling or with
a gear engaged.
Rear wheel locked by the en-
gine brake for a lengthy period,
for example while descending
on a loose or slippery surface.
If a fault message is issued on
account of exceptional riding
conditions, you can reactivate
the ABS function by switching
the ignition off and on again.
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z Engineering details