brake rotor BMW X3 3.0SI 2008 Owners Manual

Things to remember 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.<
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.<
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.

Things to remember when driving
84
General driving notes
Closing the liftgate
Operate the vehicle only when the liftgate
is completely closed; otherwise, exhaust
fumes could enter the interior of the vehicle.<
If special circumstances should make it abso-
lutely necessary to operate the vehicle with the
liftgate open:
1.Close all windows and the panorama glass
sunroof.
2.Greatly increase the air supply of the air
conditioning system or automatic climate
control, refer to page64 or67.
Hot exhaust system
High temperatures occur in the exhaust
system of every vehicle. Do not remove
the heat shields installed adjacent to various
sections of the exhaust system, and never apply
undercoating to them. When driving, standing
at idle, and parking, take care to avoid possible
contact between the hot exhaust system and
any highly flammable materials such as hay,
leaves, grass, etc. Such contact could lead to
a fire, resulting in serious personal injury and
property damage. Do not touch hot exhaust
pipe, it can cause burns.<
When the vehicle is parked
Condensation forms in the air conditioner/auto-
matic climate control system during operation,
and then exits under the vehicle. Traces of con-
densed water under the vehicle are therefore
normal.
Before driving into a car wash
Fold in the exterior mirrors, refer to page33;
otherwise, they could be damaged due to the
width of the vehicle.
Deactivate the rain sensor; otherwise, damage
could result from undesired wiper activation,
refer to page42.
Hydroplaning
When driving on wet or slushy roads,
reduce road speed. If you do not, a wedge
of water can form between tires and road sur-
face. This phenomenon is referred to as hydro-
planing, and is characterized by a partial or
complete loss of contact between tires and
road surface, ultimately undermining your abil-
ity to steer and brake the vehicle.<
The danger of hydroplaning increases as tire
tread depth decreases, also refer to Minimum
tread depth on page97.
Driving through water
Do not drive through water on the road if it
is deeper than 20 in/50 cm, and then only
at walking speed. Otherwise, the vehicle's
engine, the electrical systems, and the trans-
mission may be damaged.<
Using handbrake on inclines
Do not hold the vehicle in place on slopes
by slipping or riding the clutch, use the
handbrake instead. Otherwise, greater clutch
wear will result.<
Safe braking
Your BMW is equipped with ABS as standard
equipment. In situations in which it is required, it
is best to apply the brakes fully. Since the vehi-
cle maintains steering responsiveness, you can
nevertheless avoid possible obstacles with a
minimum of steering effort.
Pulsation at the brake pedal combined with
sounds from the hydraulic circuits indicates to
the driver that ABS is in its active mode.
Wet roads
On wet roads or in heavy rain, briefly apply light
pressure to the brake pedal every few miles.
Watch traffic conditions to ensure that this
maneuver does not endanger other road users.
The heat that is generated by the brake applica-
tions helps to dry the brake pads and rotors.
The full braking force will then be available
when you need it.

Reference
At a glance
Controls
Driving tips
Mobility
85
Hills
To prevent overheating and reduced effi-
ciency of the brake system, drive long or
steep downhill grades in the gear in which the
least braking is required. Otherwise, even light
but continuous pressure on the brake can lead
to high temperatures, brake wear and possibly
even brake failure.<
The braking action of the engine can be further
intensified by downshifting, all the way down to
first gear if need be. This strategy helps you
avoid placing excessive loads on the brake sys-
tem. Downshifting in manual mode of automatic
transmission, refer to page41. When descend-
ing hills slowly, use HDC Hill Descent Control,
refer to page52.
Never drive with the clutch depressed,
with the transmission in neutral, or with
the engine switched off; otherwise, you will
have neither the braking action of the engine or
nor its power assistance to the brakes or steer-
ing.
Never allow floor mats, carpeting, or other arti-
cles to protrude into the area around the brake
or accelerator pedals and obstruct their move-
ment.<
Corrosion on brake rotors
When the vehicle is driven only occasionally,
during extended periods when the vehicle is not
used at all, and in operating conditions where
brake applications are less frequent, there is an
increased tendency for corrosion to form on
rotors, while contaminants accumulate on the
brake pads. This occurs because the minimal
pressure which must be exerted by the pads
during brake applications to clean the rotors is
not reached.
Should corrosion form on the brake rotors, the
brakes will tend to respond with a pulsating
effect that even extended application will fail to
cure.
Brake pads
The warning lamp lights up.
The brake pads have reached their min-imum pad thickness. Have brake pads replaced
immediately.
Cargo loading
To avoid loading the tires beyond their
approved carrying capacity, never over-
load the vehicle. Overloading can lead to over-
heating of the tire and increases the rate at
which damage develops inside the tires. The
ultimate result can assume the form of a sudden
blow-out.<
Make sure that no fluids leak in the cargo
area; as otherwise the vehicle could be
damaged.<
Determining load limit
1.Locate the following statement on your
vehicle's placard
*:
The combined weight of occupants
and cargo should never exceed
XXX lbs. or YYY kg. Otherwise, the vehicle
may be damaged and unstable driving con-
ditions may result.<
2.Determine the combined weight of the
driver and passengers that will be riding in
your vehicle.
3.Subtract the combined weight of the driver
and passengers from XXX lbs. or YYY kg.
4.The resulting figure equals the available
amount of cargo and luggage load capacity.
For example, if the XXX amount equals
990 lbs. and there will be five 150-lb. pas-
sengers in your vehicle, the amount of avail-
able cargo and luggage load capacity is
240 lbs.:
990 lbs. minus 750 lbs. = 240 lbs.

Reference
At a glance
Controls
Driving tips
Mobility
127
Battery114
– charging114
– disposal114
– indicator lamp12
– jump starting117
– power failure114
– remote control18
– warning lamp114
Belts, refer to Safety belts32
Beverage holder, refer to Cup
holders72
Blower, refer to
– Air volume64
– Air volume, adjusting
manually67
BMW homepage4
BMW maintenance
system105
Bottle holder, refer to Cup
holders72
Brake assistant51
– warning lamp53
Brake fluid104
– level104
– warning lamp104
Brake force display56
Brake lamps110
– indicator lamp, defective
bulb12,59
– replacing bulbs110
– two-stage56
Brake pads85
– breaking-in82
– warning lamp85
Brake pedal, refer to Safe
braking84
Brake rotors
– brake system82
– breaking-in82
Brakes84,104
– ABS51,84
– brake fluid104
– brake pads85
– breaking-in82
– handbrake39
– indicator/warning lamp12Brake system104
– brake fluid104
– brake pads85
– breaking-in82
– disk brakes85
– warning lamp
104
Brake wear warning
– refer to Brake pads85
– warning lamp104
Breakdown service, refer to
Receiving assistance116
Breaking-in82
Bulb replacement, refer to
Lamps and bulbs107
Buttons on steering wheel13
C
California law
– Event Data Recorders106
– Proposition 65 Warning5
Calling, refer to telephone
Owner's Manual
Can holder, refer to Cup
holders72
Capacities124
Capacity, cargo area124
Car care, refer to Caring for
your vehicle brochure
Car care products, refer to
Caring for your vehicle
brochure
Care, refer to Caring for your
vehicle brochure
Cargo, securing86
Cargo area22,76
– capacity124
– cover77
– emergency release, refer to
Opening manually22
– enlarging76
– floor cover78
– foldable rear backrest76
– hatch, refer to Liftgate22
– lashing eyes78
– opening from outside22
– opening with remote
control20
– power socket74Cargo loading85
– load86
– securing cargo86
– stowing cargo86
– vehicle85
Caring for artificial leather,
refer to Caring for your
vehicle brochure
Caring for carpet, refer to
Caring for your vehicle
brochure
Caring for leather, refer to
Caring for your vehicle
brochure
Caring for plastic, refer to
Caring for your vehicle
brochure
Caring for vehicle finish, refer
to Caring for your vehicle
brochure
Car keys, refer to Key set18
Car phone, refer to separate
Owner's Manual
Car phone preparation75
Car radio, refer to Owner's
Manual for Radio/Onboard
Computer
Car wash84
– refer to Caring for your
vehicle brochure
Cassette operation, refer to
Owner's Manual for Radio/
Onboard Computer
CD operation, refer to Owner's
Manual for Radio/Onboard
Computer
Cellphone, refer to separate
operating instructions
Central locking system19
– interior21
Changes, technical, refer to
For your own safety5
Changing a wheel111
Changing gears
– automatic transmission with
Steptronic41
– manual transmission40
Changing wheels97