Break-in procedures – BMW 2006 bmw 325i User Manual

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To ensure that your vehicle provides
maximum economy throughout a long
service life, we request that you comply
with the following recommendations.

Engine and differential

Up to 1,200 miles (2,000 km):
Drive at varying engine speeds and
road speeds, but do not exceed
4,500 RPM or a road speed of 100 mph
(160 km/h) during this initial period.

Obey your local and state maximum
speed limits.

Do not apply full throttle and avoid
pressing the accelerator beyond the
kickdown point.

After 1,200 miles (2,000 km), you can
gradually increase the engine speed or
road speed.

Follow the same break-in procedure if
either the engine or the differential is
replaced in the future.

Tires

Due to technical factors associated
with their manufacture, tires do not
achieve their full traction potential until
an initial break-in period has elapsed.
For this reason, drive cautiously during
the first 200 miles (300 km).

Obey your local and state maximum
speed limits.

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

water may form between the tire and
the road surface. This phenomenon is
referred to as aquaplaning, or hydro-
planing, and can lead to partial or
complete loss of traction, vehicle
control and braking effectiveness.
Reduce your speed on wet roads.

Brake system

Brake pads and disks do not attain their
optimal wear patterns until after approx.
300 miles (500 km).

To break-in the separate parking brake
drums, apply the parking brake lightly
when coasting to a standstill (at a traffic
signal, for instance), provided that
traffic conditions allow you to do so.
To avoid corrosion, repeat this proce-
dure from time to time.

The brake lamps do not come on
when the parking brake is set.

Vacuum for the brake system servo unit
on your BMW is available only when the
engine is running. When you move the
vehicle with the engine off – when
towing, for example – substantially
higher levels of pedal force will be
required to brake the vehicle.

Clutch

The clutch will also begin to function
optimally after about 300 miles
(500 km). Engage the gears carefully
during the break-in period.

Break-in procedures