brake rotor BMW 325Ci CONVERTIBLE 2002 E46 Owner's Manual

108n
To ensure that your vehicle continues to
provide maximum economy throughout
an extended service life, we request
that you devote careful attention to the
following instructions.
Engine and differentialThe first 1,200 miles (2,000 km):
Attempt to constantly vary both vehicle
and engine speed during these initial
miles while remembering to avoid
engine speeds in excess of 4,500 rpm
and/or vehicle speeds of over 100 mph
(160 km/h):
Always obey all official speed limits.
Refrain from using full throttle and avoid
pressing the accelerator beyond the
kickdown point.
After the initial 1,200 miles (2,000 km)
you can gradually increase both engine
and vehicle speeds.
Please remember to observe the same
break-in procedures if either the engine
or the differential is replaced later in the
course of the vehicle's service life.
TiresOwing to technical factors associated
with their manufacture, tires do not
achieve their full traction potential until
an initial break-in period has elapsed.
We thus ask you to drive with extra care
during the first 200 miles (300 km).
Always obey all official 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. elapse before the brake pads and
rotors achieve the optimal pad-surface
and wear patterns required for trouble-
free operation and an extended service
life later on.
To break-in the separate parking brake
drums, apply the parking brake lightly
when coasting to a standstill (at a traffic
signal, for instance); use caution to
avoid posing a danger to other road
users. You can prevent corrosion in the
drums by periodically repeating this
procedure.
The brake lamps do not come on
when you engage the parking
brake.
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 Ð when
towing, for example Ð substantially
higher levels of pedal force will be
required to brake the vehicle. elapse before the clutch starts to
operate at optimum efficiency.
Remember to engage the clutch care-
fully during this initial period.
Break-in procedures

110n
Brake system Hardtop
*
Disc brakesLimited vehicle use, extended periods
with the vehicle parked or in storage,
and operating conditions in which
braking is restricted to gentle, low-
pressure applications will all increase
the tendency for corrosion to form on
the rotors; this is often accompanied by
a simultaneous accumulation of
contamination on the brake pads. The
pads must exert a certain minimal level
of pressure against the rotors for the
disc brakes' inherent self-cleaning
effect to remain effective.
If the brake rotors are corroded, they
will tend to respond to braking with a
pulsating effect that even extended
brake applications will fail to cure.
When driving in heavy rain and on wet
roads it is useful to apply light pressure
to the brake pedal every few miles.
Monitor traffic conditions to ensure that
this maneuver does not pose a hazard
to you or to other road users. The heat
generated in this process helps dry the
pads and rotors to ensure that your
brake system will respond with undi-
minished efficiency when you need it.
When descending steep hills and
extended grades, downshift to a gear
that will allow you to continue safely with only a minimal amount of braking.
By minimizing the loads placed on the
brake system, this strategy helps
ensure that optimal brake system
response will remain available at all
times. Use care to avoid exceeding the
approved engine-speed range, refer to
page 74.
Do not coast with the clutch
depressed or with the transmission
or selector lever in neutral. Do not coast
with the engine shut off. The engine
provides no braking effect when the
clutch is depressed and there is no
power-assist for braking or steering
when the engine is not running.
Never allow floor mats, carpets or any
other objects to protrude into the area
around the accelerator, clutch and brake
pedals and obstruct their movement.<
Brake pads
For your own safety: use only
brake pads that the manufacturer
has released for your particular vehicle
model. The manufacturer cannot eval-
uate non-approved brake pads to
determine if they are suited for use, and
therefore cannot ensure the operating
safety of the vehicle if they are
installed.<
It is not necessary to remove the fabric
top even in the winter, when the
hardtop is generally in constant use.
But you can also remove it at any time
with no problem. Before the fabric top
is stored in the convertible top
compartment, it must be absolutely dry
in order to avoid water spots and
mildew from forming.
The hardtop offers reading lamps and
clothes hooks that can be used just by
pressing. In addition, a roof-rack can be
mounted, for more information, please
contact your BMW center.
When suspending articles of
clothing from the hooks, be sure
that they will not obstruct the driver's
vision. Do not hang heavy objects on
the hooks. If you do so, they could
cause personal injury during braking or
evasive maneuvers.<
Two people are required for installation
or removal. Work with extreme caution
in order to avoid paint damage and
damage to the body or hardtop.
To facilitate hardtop installation or
removal, you can obtain a specially
designed hardtop lift
* or hardtop rack
*
at your BMW center.

Everything from A to Z
151n
OverviewControlsMaintenanceRepairsDataIndex
Brake system108, 109
brake pads110
brake rotors,
corrosion110
defect in hydraulic
circuits109
disc brakes110
Break-in procedure108
Bulbs and lamps,
replacement131 C
California Proposition
65 Warning126
Canned beverage
holder100
Capacities147
Car care, refer to the "Caring
for your vehicle" manual
Car phone100
Car wash systems, refer to
the "Caring for your
vehicle" manual
Care of upholstery materials,
refer to the "Caring for your
vehicle" manual Cargo loading103
CBC (Cornering Brake
Control)18, 81
Cellular phone
refer also to the
"Telephone Owner's
Manual"
Center (high-mount) brake
lamp134
Center armrest99
Central locking system28
inside control button32
Changing a wheel135
Charging the battery139
Check Control76
Check engine oil level121
Checking coolant level123
Checking tire pressures24
Child-restraint systems59
Cigarette lighter101
Cleaning headlamps71
Cleaning windshield71 Clock76
refer also to the
"Telephone Owner's
Manual"
Clutch108
Cockpit14
Coin box100
Compartments99
Compression ratio144
Computer76
refer also to the "Owner's
Manual for Onboard
Computer"
Configuring individual
settings via Vehicle and
Key Memory63
Consumption78
display75
Convenience operation via
driver's door lock
fully-automatic convertible
top31
power windows31
Convertible top
compartment panel35
Convertible top, fully
automatic operation42 Coolant123
capacity147
Coolant temperature
gauge75
Cooling system,
capacity147
Copyright4
Cornering Brake Control
(CBC)18, 81
Correct sitting posture48
Cruise control72
Cruising range78
Cup holder, refer to
beverage holder100
Curb weight146
D
Data
dimensions145
engine144
weights146
Daytime driving lamps87
DBC (Dynamic Brake
Control)82
Defrost windows92, 94
Digital clock76
Dimensions145
Dipstick, engine oil121
Displacement144