Things to remember when driving, Breaking-in, G tip – BMW X3 3.0si 2008 User Manual

Page 84: Things to re memb er when driving

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Things

to re

memb

er when

driving

82

Things to remember when driving

Breaking-in

Moving parts should be allowed to adjust to one
another. To ensure that your vehicle provides
maximum economy throughout a long service
life, we request that you comply with the follow-
ing instructions.

Engine and differential

Always obey all official speed limits.

For the first 1,200 miles/2,000 km

Drive at varying engine and driving speeds, but
do not exceed 4,500 rpm or 100 mph/160 km/h
in the process.
Generally avoid full throttle or kick-down posi-
tion of the accelerator pedal.

After 1,200 miles/2,000 km

Engine and road speed can be gradually
increased.

Tires

Due to technical factors associated with their
manufacture, tires do not achieve their full trac-
tion potential until after an initial break-in
period. For this reason, drive with extra care
during the initial 200 miles/300 km.
Obey your local and state maximum speed lim-
its.

When the vehicle is operated on wet or
slushy roads, a wedge of water may form

between the tire and the road surface. This phe-
nomenon is referred to as hydroplaning and can
lead to partial or complete loss of traction, vehi-
cle control and braking effectiveness. Reduce
your speed on wet roads.

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Brake system

Your vehicle must travel approx. 300 miles/
500 km before the brake pads and rotors
achieve the optimum pad-surface and wear
patterns required for trouble-free operation and
long service life later on.
To break in the separate handbrake drums,
apply the handbrake lightly when coasting to a
stop – at a traffic signal, for instance; use cau-
tion to avoid posing a danger to other road
users.
To avoid corrosion, repeat this procedure from
time to time.
The brake lamps do not come on when the
handbrake is applied.

Vacuum for the brake system servo unit
on your BMW is available only when the

engine is running. When you move the car with
the engine off – e.g., by towing – substantially
higher levels of pedal force will be required to
brake the vehicle.

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Clutch

The function of the clutch reaches its optimum
level only after a distance driven of approx.
300 miles/500 km. During this break-in period,
engage the clutch gently.

Following component replacements

Follow the breaking-in instructions again when-
ever subsequent driving requires replacement
of previously mentioned components.

Online Edition for Part no. 01 41 0 014 250 - © 08/07 BMW AG

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