Table of Contents
Advertisement
Automatic Stability
Control (ASC)
How does ASC work?
BMW Motorrad ASC compares
the wheel speeds of the front
and rear wheels. From the speed
difference the slip, and with it
the stability reserves on the rear
wheel are determined. When a
slip limit is exceeded, the engine
torque is adapted by the engine
management system.
What are the design
features of BMW Motorrad
ASC?
BMW Motorrad ASC is designed
as an assistant system for the
rider for the use on public roads.
The extent to which the rider af-
fects ASC control can be consid-
erable (weight shifts when cor-
nering, items of luggage loose on
the motorcycle), especially when
style of riding takes rider and ma-
chine close to the limits imposed
by physics.
The system is not optimized for
special requirements resulting
under extreme weather condi-
tions offroad or on the racetrack.
BMW Motorrad ASC can be de-
activated for these cases.
WARNING
Risky riding style
Accident hazard despite ASC
The rider is always responsi-
ble for adapting his/her driving
style.
Do not reduce the system's ex-
tra safety margin with careless
riding or unnecessary risks.
Special situations
As lean angles increase, accel-
eration potential is also progres-
sively restricted by the laws of
physics. This can result in de-
layed acceleration when coming
out of very tight curves.
The system compares the rota-
tion speeds of the front and rear
wheels to detect any tendency
for the rear wheel to spin or lose
traction. If the system registers
implausible data for an extended
period of time it will deactivate
the ASC functionality as safety
precaution and a display will alert
you to an ASC error. A self-diag-
nosis routine must be completed
before the error will be displayed.
The following unusual driving
conditions may lead to automatic
deactivation of BMW Motorrad
ASC:
Driving on the rear wheel
(Wheelie) for a longer period.
Spinning the rear wheel with
the front brake applied and the
motorcycle stationary (Burn
Out).
8
121
z
Advertisement
Table of Contents
