Automatic Stability Control - BMW Motorrad R 1250RT Rider's Manual

used to determine the inclination
of the motorcycle.
With an increasing inclination, the
braking pressure gradient is in-
creasingly limited at the start of
braking. This results in a slower
pressure buildup. In addition, the
pressure modulation in the range
of the ABS control is more uni-
form.
Advantages for the rider
The advantages of ABS Pro for
the rider are sensitive response
and high braking and riding sta-
bility with the best possible de-
celeration, even in curves.
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 ASC?
BMW Motorrad ASC is an assis-
tance system for the driver and
is designed for riding on public
roads. The extent to which the
rider affects ASC control can be
considerable (weight shifts when
cornering, loose luggage on the
motorcycle), especially when ap-
proaching the limits imposed by
the laws of physics.
The system is not optimized for
the special conditions encoun-
tered under extreme weather
during off-road and race-track
use. BMW Motorrad ASC can be
switched off under these condi-
tions.
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 exiting
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
7
123
z