Automatic Stability Control; Asc - BMW F 800 R Rider's Manual

8
WARNING
Braking in curves
90
Risk of accident despite ABS
The rider is always responsi-
ble for adapting his/her driving
style.
Do not reduce the additional
safety function with careless
riding or unnecessary risks.
Automatic Stability
Control (ASC)
with Automatic Stability Control
OE

(ASC)

How does the ASC work?
z
BMW Motorrad ASC compares
the wheel speeds of the front
and rear wheel. Differences in
the relative rotation speeds al-
low the system to determine
the slip rate, and thus the sta-
bility reserves at the rear wheel.
The engine-management system
adapts the engine torque when
the slip limit is exceeded.
What are the design
characteristics of the

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
the special conditions encoun-
tered under extreme weather
during off-road and racing use.
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-