BMW 8 Coupe Series, Руководство пользователя

Страница: 218 / 390

ing dynamics. xDrive distributes the drive forces
variably between the front and rear axles accord‐
ing to the driving situation and road surface con‐
ditions.
The drive experience switch makes it possible to
change the four-wheel drive distribution from
traction-based to sport-based.
Efficient4x4
Efficient4x4 reduces consumption by using the
four-wheel drive system according to require‐
ments.
M Sport differential
The active M Differential blocks the rear axis
transmission steplessly, depending on the drive
situation. This prevents the spinning of a single
rear wheel in order to provide optimum traction
in all driving situations.
The driver is responsible for a driving style ap‐
propriate to the situation.
Integral Active Steering
Principle
The Integral Active Steering increases agility and
enables more direct steering behaviour.
General
Integral Active Steering is a combination of a var‐
iable steering ratio and rear-wheel steering.
The variable steering ratio amplifies the steering
angle when manoeuvring, thus making the steer‐
ing more direct. The rear-wheel steering increa‐
ses manoeuvrability at low speeds by turning the
rear wheels slightly in the opposite direction to
the front wheels.
At higher speeds, the rear wheels are turned in
the same direction as the front wheels. This re‐
sults in, for example better directional stability
and a smoother change of direction.
In critical driving situations, for example over‐
steer, Integral Active Steering can stabilise the
vehicle through selective steering of the rear
wheels before the driver intervenes.
Configuration
The system offers various configurations.
Drive mode Integral Active Steering
COMFORT
ECO PRO Comfortable, for optimum
travel comfort
SPORT Dynamic, for higher agility
The different configurations are assigned to the
different drive modes of the drive experience
switch, see page
143 .
Operation with snow chains
To ensure that wheels can move as required
when using snow chains, the rear-wheel steering
of the Integral Active Steering must be switched
off when snow chains are fitted.
Setting operation with snow chains, see
page
316 .
Malfunction
If a malfunction occurs, the steering wheel must
be turned further, whilst at high speeds, the vehi‐
cle responds more sensitively to steering wheel
movements.
The stabilising function may be deactivated.
Drive cautiously and think well ahead.
Have the system checked by a Service Partner
of the manufacturer or another qualified Service
Partner or a specialist workshop.
Seite 218
CONTROLS
Driving Stability Control Systems
218
Online Edition for Part no. xxx - VI/18