brake rotor BMW 325I SEDAN 2005 E90 Owner's Manual

Things to remember when driving
106
Things to remember when driving
Break-in period
Moving parts need breaking-in time to adjust to
each other. Please follow the instructions below
in order to achieve the optimal service life and
economy of operation for your vehicle.
Engine and differential
Up to 1,250 miles/2,000 km:
Attempt to vary both engine and vehicle
speeds, but refrain from exceeding an engine
speed of 4,500 rpm or a driving speed of
100 mph or 160 km/h.
Always obey all official speed limits.
Avoid full-throttle operation and use of the
transmission's kick-down mode.
Once you have driven 1,250 miles/2,000 km,
the engine and vehicle speeds 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. Therefore, drive reservedly during the
first 200 miles/300 km.
Brake system
Brakes require an initial break-in period of
approx. 300 miles/500 km to achieve optimized
contact and wear patterns between brake pads
and rotors. Drive with caution during this break-
in period.
Clutch
The function of the clutch reaches its optimal
level only after a distance driven of approx.
300 miles/500 km. During this break-in period,
engage the clutch gently.
Following part replacement
The same break-in procedures should be
observed if any of the components mentioned above have to be renewed in the course of the
vehicle's operating life.
General driving notes
Closing the luggage compartment lid
Operate the vehicle only when the lug-
gage compartment lid is completely
closed. Otherwise, exhaust fumes could enter
the interior of the vehicle.<
If special circumstances make it absolutely nec-
essary to drive with the luggage compartment
lid open:
1.Close all windows and the glass sunroof.
2.Increase the air flow rate of the automatic
climate control considerably, refer to
page91.
Hot exhaust system
As in all vehicles equipped with a catalytic
converter, extremely high temperatures
are generated in this vehicle. Do not remove the
heat shields installed adjacent to various sec-
tions of the exhaust system, and never apply
undercoating to them. When driving, standing
at idle and while parking, take care to avoid pos-
sible contact between the hot exhaust system
and any highly flammable materials such as hay,
leaves, grass, etc. Such contact could lead to a
fire, with the risk of serious personal injuries and
property damage.<
Portable phone in the vehicle
BMW discourages the use of mobile
communications devices, e.g. portable
phones, inside the vehicle without a direct con-
nection to an outside antenna. Otherwise, the
vehicle electronics and mobile communication
device can influence one another. In addition,
there is no assurance that the radiation which
results from transmission will be dissipated
from the vehicle interior.<

Driving tips
107Reference
At a glance
Controls
Communications
Navigation
Entertainment
Mobility
Interior and exterior mirrors, automatic
dimming feature*
The automatic dimming feature of the interior
and exterior mirrors
* is controlled by two photo
cells in the interior rearview mirror. One photo
cell is in the mirror frame, see arrow; the other is
on the back of the mirror.
In order to ensure that the system functions
correctly, keep the photo cells clean, do not
cover the area between the interior rearview
mirror and windshield, and do not affix adhesive
labels or stickers of any kind to the windshield
directly in front of the mirror.
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 situation, known as hydroplaning,
means that the tire can actually lose contact
completely with the road surface, so that nei-
ther the car can be steered nor the brake be
properly applied.<
The risk of hydroplaning increases with declin-
ing tread depth on the tires, refer also to Mini-
mum tread depth on page177.
Driving through water
Drive through water on the road only if it is
not deeper than 1 ft/30 cm, and then only
at walking speed at the most. Otherwise, the
vehicle's engine, the electrical systems and the
transmission may be damaged.<
Using handbrake on inclines
On inclines, do not hold the vehicle with
the clutch; use the handbrake. Otherwise
greater clutch wear will result.<
Also use the drive-off assistant, refer to
page80.
Braking safely
Your BMW is equipped with ABS as a standard
feature. Applying the brakes fully is the most
effective way of braking in situations in which
this is necessary. Since the vehicle maintains
steering responsiveness, you can still avoid
possible obstacles with a minimum of steering
effort.
Pulsation of the brake pedal, combined with
sounds from the hydraulic circuits, indicate that
ABS is in its active mode.
Driving in wet conditions
When roads are wet or there is heavy rain,
briefly exert gentle pressure on the brake pedal
every few miles. Monitor traffic conditions to
ensure that this maneuver does not endanger
other road users. The heat generated in this
process helps dry the pads and rotors to ensure
that full braking efficiency will then be available
when you need it.
Hills
To prevent overheating and the resulting
reduced efficiency of the brake system,
drive long or steep downhill gradients in the
gear in which the least braking is required. Even
light but consistent pedal pressure can lead to
high temperatures, brake wear and possibly
even brake failure.<
You can increase the engine's braking effect by
shifting down, all the way to first gear if neces-
sary. This strategy helps you avoid placing
excessive loads on the brake system. Down-
shifting in manual mode of the automatic trans-
mission, refer to page52.
Never drive with the clutch pedal held
down, with the gearshift lever or selector
lever in neutral or with the engine switched off;
engine braking action will not be present with

Things to remember when driving
108 the transmission in neutral and there will be no
power assistance to the brakes or steering
while the engine is switched off.
Never allow floor mats, carpets or any other
objects to protrude into the area around the
accelerator and brake pedals and obstruct their
movement.<
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 minimum
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.
When the vehicle is parked
Condensation forms while the automatic cli-
mate control is in operation, and then exits
under the vehicle. Traces of condensed water
under the vehicle are therefore normal.
Before driving into a car wash
For general information about taking care of
your BMW, refer to the Caring for your vehicle
brochure.
Cargo loading
To avoid loading the tires beyond their
approved carrying capacity, never over-
load the vehicle. Overloading can lead to over-
heating and increases the rate at which damage
develops inside the tires. The ultimate result
can assume the form of a sudden blow-out.<
Determining loading limit
1.Locate the following statement on your
vehicle's placard
*:
The combined weight of occupants
and cargo should never exceed
XXX kg or YYY lbs. Otherwise, overloading
can result in damage to the vehicle and
unstable driving conditions.<
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 kilograms or YYY
pounds.
4.The resulting figure equals the available
amount of cargo and luggage load capacity.
For example, if the YYY amount equals
1,400 lbs. and there will be five 150 lbs.
passengers in your vehicle, the amount of
available cargo and luggage load capacity is
650 lbs.:
1,400 lbs. minus 750 lbs. = 650 lbs.
5.Determine the combined weight of luggage
and cargo being loaded on the vehicle. That
weight may not safely exceed the available
cargo and luggage load capacity calculated
in step 4.
6.If your vehicle will be towing a trailer, part of
the load from your trailer will be transferred
to your vehicle. Consult the manual for
transporting a trailer to determine how this
may reduce the available cargo and luggage
load capacity of your vehicle.

Reference 207
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
"Automatic programs" with
automatic climate control91
Automatic recirculated-air
control AUC91
Automatic station search139
Automatic transmission with
Steptronic51
– interlock51,52
– overriding selector lever
lock53
– shiftlock52
– sport program52
– towing away195
– tow-starting195
AUTO program for automatic
climate control90
"Autostore"
on the radio140
AUX-IN149
– port97
Average fuel consumption66
– setting the units68
Average speed65
"Avoid ferries" in
navigation124
Avoid freeways for
navigation123
"Avoid highways" in
navigation123
Avoiding unintentional
alarms35
"Avoid tollroads" in
navigation124
Axle loads, refer to
Weights201
"A - Z"154
B
Backrests, refer to Seats39
Backrest width adjustment40
Back seats, refer to Rear seats
– adjusting head restraints41
Backup lamps
– replacing bulbs190
Backup lamps, refer to Tail
lamps189
Balance, tone control135Bar, refer to Tow-starting,
towing away196
Bass, tone control135
Battery191
– charging191
– disposal191
– jump starting194
– temporary power failure191
Being towed195
Belts, refer to Safety belts43
Belt tensioner, refer to Safety
belts43
Beverage holders, refer to
Cup holders98
Black ice, refer to Ice
warning64
Blower, refer to Air flow
rate91
BMW Assist160
– enabling160
– services offered161
"BMW Contact"164
"BMW Contact
Numbers"164
BMW Maintenance
System185
"BMW Service"162
"BMW Service settings"161
Bottle holders, refer to Cup
holders98
Brake assist, refer to Dynamic
Brake Control78
Brake fluid184
– level too low184
– warning lamp184
Brake fluid, refer to Service
requirements69
Brake Force Display82
Brake hydraulics, refer to
Brakes184
Brake lamps
– Brake Force Display82
– replacing bulbs190
Brake pads, breaking in106
Brake rotors108
– brakes106
– breaking in106Brakes
– ABS78
– BMW Maintenance
System185
– brake fluid184
– brake pads184
– breaking in106
– handbrake51
– service requirements69
Brakes, refer to Braking
safely107
Brake system106
– BMW Maintenance
System185
– brake fluid184
– brake pads184
– breaking in106
– disc brakes108
Breakdown services, refer to
Roadside Assistance193
Breaking in the clutch106
Breaking in the
differential106
Break-in period106
"Brightness"76
Bulb changing, refer to Lamps
and bulbs187
Button for starting engine49
Buttons on steering wheel11
C
California Proposition 65
warning5
"Call"154
Call
– accepting153
– displaying accepted155
– ending154
– in absence155
– starting153
Calling
– from phone book154
– from Top 8 list155
– redialing155
Can holders, refer to Cup
holders98
Capacities201