BMW F 800 ST 2007 Rider's Manual page 74

can lift off the ground, and the
5
outcome can be a highsiding
situation in which the motor-
72
cycle can flip over.
Severe braking can
cause the rear wheel to
lift off the ground.
When you brake, bear in mind
that ABS control cannot be
relied on in all circumstances
z
to prevent the rear wheel from
lifting clear of the ground.
What is the design
baseline for BMW
Motorrad ABS?
Within the limits imposed by
physics, BMW Motorrad ABS
ensures directional stabil-
ity on any surface. The sys-
tem is not optimised for spe-
cial requirements that apply
under extreme competitive
situations off-road or on the
track.
Special situations
The speeds of the front and
rear wheels are compared
as one means of detecting a
wheel's incipient tendency to
lock. If the system registers
implausible values for a
lengthy period the ABS
function is deactivated for
safety reasons and an ABS
fault message is issued. Self-
diagnosis has to complete
before fault messages can be
issued.
In addition to problems with
the BMW Motorrad ABS, ex-
ceptional riding conditions
can lead to a fault message
being issued.
Exceptional riding
conditions:
Riding for a lengthy period
with the front wheel lifted off
the ground (wheely).
Rear wheel rotating with the
motorcycle held stationary
by applying the front brake
(burn-out).
Heating up with the motor-
cycle on the centre stand
or an auxiliary stand, en-
gine idling or with a gear
engaged.
Rear wheel locked for a
lengthy period, for example
while descending off-road.
If a fault message is issued on
account of exceptional riding
conditions as outlined above,
you can reactivate the ABS
function by switching the igni-
tion off and on again.
What significance
devolves on regular
maintenance?
Invariably, a technical
system cannot perform
beyond the abilities dictated
by its level of maintenance.
In order to ensure that the