BMW S 1000RR Owner's Manual page 109

time, the BMW Motorrad Integral
ABS must assume extremely low
friction coefficients (gravel, ice,
snow) so that the running wheels
turn in every imaginable case and
the driving stability is ensured.
After detecting the actual con-
ditions, the system adjusts the
optimum brake pressure.
How is the BMW Motorrad
Race ABS noticeable to
the rider?
If the ABS system must reduce
the braking forces due to the
conditions described above, then
vibrations can be felt at the brake
lever.
If the brake lever is operated,
braking pressure is also built up
at the rear wheel via the integral
function. If the footbrake lever is
not operated until afterwards, the
brake pressure already built up
is noticeable as counterpressure
earlier than when the footbrake
pedal is operated before or at the
same time as the brake lever.
Lifting off rear wheel
Even during severe braking, a
high level of tire grip can mean
that the front wheel does not
lock up until very late, if at all.
Consequently, ABS does not in-
tervene until very late, if at all.
Under these circumstances the
rear wheel can lift off the ground,
and the outcome can be a high-
siding situation in which the mo-
torcycle can flip over.
WARNING
Lifting off of the rear wheel
due to heavy braking.
Accident hazard
When braking heavily, bear in
mind that the ABS control can-
not always be relied on to pre-
vent the rear wheel from lifting
off the ground.
Special situations
To detect the tendency of the
wheels to lock up, the speeds
of the front and rear wheel are
compared. If implausible values
are detected over a longer period
of time, the ABS function is de-
activated for safety reasons and
an ABS fault is indicated. The
condition for a fault code is the
completed self-diagnosis.
In addition to problems on the
BMW Motorrad Race ABS, un-
usual driving conditions can also
lead to a fault message.
Unusual driving conditions:
Heating up on an auxiliary
stand at idle speed or with gear
engaged.
Rear wheel locked-up for a
longer period of time by engine
brake, e.g. when riding down
steep hills.
Should a fault code result due to
one of the driving conditions de-
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