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the brakes are applied under
these circumstances the ABS
has to reduce braking force
to ensure that directional
stability is maintained when
the wheels regain contact
with the road surface. At this
instant the BMW Motorrad
Integral ABS Pro must assume
an extremely low coefficient of
friction (gravel, ice, snow), so
that the wheels will continue
to rotate under all imaginable
circumstances, because this is
the precondition for ensuring
directional stability. As soon
as is registers the actual
circumstances, the system
reacts instantly and adjusts
braking force accordingly to
achieve optimum braking.
What feedback does the
rider receive from the
BMW Motorrad Integral
ABS Pro?
If the ABS system has to re-
duce braking force on account
of the circumstances described
above, vibration is perceptible
through the handbrake lever.
When the handbrake lever is
pulled, brake pressure is also
built up at the rear wheel by
the integral function. If the
brake pedal is depressed after
the handbrake lever is pulled,
the brake pressure built up
beforehand is perceptible as
counter-pressure sooner than is
the case when the brake pedal
is depressed either before or
at the same time as the brake
lever is pulled.
Rear wheel lift
Under very severe and sudden
deceleration, however, under
certain circumstances it is pos-
sible that the BMW Motorrad
Integral ABS Pro will be un-
able 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 con-
trol cannot always be re-
lied on to prevent the rear
wheel from lifting clear of
the ground.
155
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