Dynamic Engine Brake Control - BMW R 12 nineT 2023 Rider's Manual

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tional riding conditions outlined
below.
Exceptional riding conditions:
Riding for a lengthy period
with the front wheel lifted off
the ground (wheelie).
Rear wheel rotating with the
vehicle held stationary by ap-
plication of the front brake
(burn-out).
Heating up with the motor-
cycle on an auxiliary stand,
in neutral or with a gear en-
gaged.
If the front wheel lifts clear of
the ground under severe accel-
eration, DTC either as a func-
tion of the riding mode or the
DTC setting reduces engine
torque until the front wheel re-
gains contact with the ground.
BMW Motorrad recommends
turning the throttle grip back
slightly when lifting the front
wheel in order to reach a stable
driving condition again as soon
as possible.
DYNAMIC ENGINE BRAKE
CONTROL
How does dynamic engine
brake control work?
The purpose of dynamic en-
gine brake control is to prevent
the unstable riding states that
can be produced by excess-
ive engine braking moment
acting on the rear wheel. De-
pending on the road condition
and riding dynamic, excessive
braking torque can produce
a sharp rise in rear-wheel slip
and impair directional stability.

Dynamic engine brake control

limits this slip at the rear wheel
to a safe, mode-dependent reg-
ulated slip.
Causes for excessive slip at
the rear wheel:
Riding with engine overrun
on a surface with a low coef-
ficient of friction (e.g. wet
leaves).
Rear-wheel hop when rider
downshifts.
Sharp braking during sporty
riding.
In the same way as DTC trac-
tion control, dynamic engine
brake control compares the
wheel circumferential velocities
of the front and rear wheels.
Additional information on the
143

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