BMW R 1200 GS -, Rider'S Manual

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sharp braking. ABS Pro reduces
abrupt changes in steering
force, particularly in panic-
braking situations, counteracting
the vehicle's otherwise natural
but undesirable tendency to
straighten up.
ABS intervention
Technically speaking, depending
on the riding situation ABS Pro
adapts ABS intervention to the
motorcycle's bank angle. Signals
for rate of roll and rate of yaw
and lateral acceleration are used
to calculate bank angle.
As the motorcycle is heeled over
more and more as it banks into
a corner, an increasingly strict
limit is imposed on the brake-
pressure gradient for the start of
brake application. This slows the
build-up of brake pressure to a
corresponding degree. Addition-
ally, pressure modulation is more
uniform across the range of ABS
intervention.
Advantages for the rider
The advantages of ABS Pro for
the rider are sensitive response
and high braking and directional
stability combined with best-case
deceleration of the motorcycle,
even when cornering.
Automatic Stability
Control (ASC)
How does ASC work?
BMW Motorrad ASC compares
the speed of rotation of the front
wheel and the rear wheel. The
differential is used to compute
slip as a measure of the reserves
of stability available at the rear
wheel. If slip exceeds a certain
limit, the engine control inter-
venes and adapts the engine
torque accordingly.
What is the design
baseline for
BMW Motorrad ASC?
BMW Motorrad ASC is designed
as an assistant system for the
rider and for 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
the style of riding takes rider and
machine close to the limits im-
posed by physics.
Activate the Enduro mode for
off-roading. This mode delays
ASC intervention slightly in order
to permit controlled drifting.
The system is not optimised for
special requirements that apply
under extreme competitive situ-
ations off-road or on the track.
The BMW Motorrad ASC can be
deactivated in these cases.
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z Engineering details