Operating Instructions

171
What happens when rough
roads are encountered?
Bumpy or rough roads can
briefly lead to a loss of con-
tact between the tires and the
road surface, until the trans-
ferable braking force is re-
duced to zero. If braking is
carried out in this situation,
ABS must reduce the brake
pressure to ensure riding sta-
bility when restoring contact to
the road. At this point in time,
the BMW Motorrad fully inte-
gral ABS Pro must assume ex-
tremely low friction coefficients
(gravel, ice, snow) so that the
running wheels turn in every
imaginable case and the driv-
ing stability is ensured. After
detecting the actual conditions,
the system adjusts the opti-
mum brake pressure.
In what ways is the Integral
ABS noticeable to the rider?
If the ABS system has to
reduce the braking force due to
the conditions described above,
then vibrations can be felt
through the handlebar brake
lever.
If the brake lever is pulled, then
brake pressure is built up at
the rear wheel with the inte-
gral function. If the footbrake
lever is not actuated until after
this, the brake pressure already
built up can be felt as counter-
pressure earlier than when the
footbrake lever is actuated be-
fore or together with the brake
lever.
Lifting off rear wheel
However, during extremely
significant and rapid deceler-
ations it is possible that the
BMW Motorrad fully integral
ABS Pro cannot prevent the
rear wheel from lifting off the
ground. In these cases, the mo-
torcycle can also flip end over
end.
WARNING
Lifting off of the rear wheel
due to heavy braking
Accident hazard
When braking heavily, bear
in mind that the ABS control
cannot always be relied on
to prevent the rear wheel
from lifting off the ground.
What are the design
characteristics of the Integral
ABS?
The BMW Motorrad ABS en-
sures riding stability on any sur-
face within the limits of riding
physics.