BMW Motorrad R 1200 GS Rider's Manual page 93

Even with ASC, physical
laws cannot be overridden.
The driver is always responsible
for adapting his/her driving style.
Do not reduce the additional
safety provided with risky
driving.
Special situations
At an increasing angle, the accel-
eration performance is increas-
ingly limited in accordance with
physical laws. This can result in
delayed acceleration when com-
ing out of very tight curves.
To detect the spinning of the
rear wheel, the speeds of the
front and rear wheel are com-
pared. If implausible values are
detected over a longer period of
time, the ASC function is deac-
tivated for safety reasons and an
ASC fault is indicated. The con-
dition for a fault message is the
completed self-diagnosis.
In the following unusual driving
states, the BMW Motorrad ASC
can be automatically deactivated.
Unusual driving conditions:
Driving on the rear wheel
(wheely) for a longer period.
Rear wheel spinning in place
with front brake pulled (burn
out).
Heating up on the main or aux-
iliary stand at idle or with gear
engaged.
The ASC is reactivated by
switching the ignition on and
off and then driving at a speed
above 5 mph (10 km/h).
With extremely massive-bar tires,
an ASC intervention can occur
before the optimum propulsion
is achieved due to the greater
slip involved. In these cases the
BMW Motorrad ASC should be
deactivated.
If the front wheel loses contact
to the ground during extreme
acceleration, the ASC reduces
the engine torque until the front
wheel touches the ground again.
In this case, BMW Motorrad
recommends turning back the
throttle twist grip somewhat to
achieve a stable driving state
again as quickly as possible.
On a slippery surface, the throttle
twist grip should never be sud-
denly turned back completely
without pull the clutch at the
same time. The engine braking
torque can cause the rear wheel
to block, resulting in an unstable
driving state. This case cannot
be controlled by the BWM Mo-
torrad ASC.
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