brake rotor BMW 328I CONVERTIBLE 2011 E94 Owner's Manual

Things to remember when driving
126
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
Always obey all official speed limits.
Up to 1,200 miles/2,000 km
Drive at varying engine and road speeds, but do
not exceed an engine speed of 4,500 rpm or a
road speed of 100 mph/160 km/h.
Avoid full-throttle operation and use of the
transmission's kickdown mode.
After driving 1,200 miles/2,000 km
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 cautiously 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 cautiously 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.
Saving fuel
The fuel consumption of your vehicle depends
on several factors. You can lower fuel consump-
tion and the environmental impact by taking
certain measures, adjusting your driving style
and having the vehicle serviced regularly.
Remove any unneeded cargo
Additional weight increases fuel consumption.
Remove any mounted parts after you
have finished using them
Remove unneeded additional mirrors, the roof
rack and the rear luggage rack after use.
Mounted parts affect the vehicle's aerodynam-
ics and increase fuel consumption.
Close the windows and glass roof
An open glass roof or window causes higher air
resistance and thus increases fuel consump-
tion.
Check tire inflation pressure regularly
Check the tire inflation pressure at least twice a
month and before embarking on a long journey,
and correct it if necessary.
Low tire inflation pressure causes higher rolling
resistance and thus increases fuel consumption
and tire wear.
Set off immediately
Do not let the engine warm up while the car is
still standing, but set off immediately at moder-
ate engine speed. This is the fastest way for the
cold engine to reach its operating temperature.

Things to remember when driving
128
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.<
Use the parking brake on inclines
On inclines, do not hold the vehicle for a
lengthy period using the clutch; use the
parking brake instead. Otherwise, greater
clutch wear will result.<
For more information about the drive-off assis-
tant, refer to page92.
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 brake pressure can lead to
high temperatures, brake wear and possibly
even brake failure. 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 page59.
Sports automatic transmission with dou-
ble clutch: never drive with the transmis-
sion in neutral or with the engine switched off;
otherwise, there will be no engine braking
action and no power assistance to the brakes
and steering.
Manual transmission: never drive with the
clutch held down, with the transmission in neu-
tral or with the engine switched off; otherwise,
engine braking action will not be present or
there will be no power assistance to the brakes
or steering.
Never allow floor mats, carpets or any other
objects to protrude into the area around the
pedals; otherwise, pedal function could be
impaired.<
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.

Reference 259
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
AUX-IN
– port115
AUX-IN port177
Available services202
Average fuel consumption77
– setting the units80
Average speed77
Avoid highways in
navigation144
Avoiding unintentional
alarms33
Axle loads, refer to
Weights249
B
Backrest contour, refer to
Lumbar support44
Backrests, refer to Seat
adjustment43
Backrest width adjustment44
Back seats
– refer to Rear seats46
Bag holder119
Band-aids, refer to First aid
pouch239
Bar, refer to Towing
methods242
Base plate for telephone or
mobile phone
– refer to Snap-in adapter195
– refer to Snap-in adapter in
the center armrest storage
compartment115
Bass, tone setting154
Battery237
– charging237
– disposal35,237
– jump-starting239
– remote control26
– replacing237
– temporary power failure237
Battery for mobile phone195
Battery renewal
– remote control35
– remote control for vehicle35
Being towed241
Belt hand-over49
– pinch protection system50Belts, refer to Safety belts49
Belt tensioner, refer to Safety
belts49
Beverage holders, refer to
Cupholders116
Black ice, refer to Outside
temperature warning75
Blinds, refer to Roller sun
blinds114
Blower, refer to Air
volume108
Bluetooth, activating/
deactivating187
BMW
– car shampoo232
BMW Assist198
BMW Assist,
activating200,202
BMW Homepage4
BMW Maintenance
System227
BMW Search200
BMW webpage4
Bottle holders, refer to
Cupholders116
Brake Assist, refer to Dynamic
Brake Control DBC89
Brake fluid, refer to Service
requirements80
Brake Force Display97
Brake lamps
– Brake Force Display97
Brake pads126
– breaking in126
Brake rotors128
– brakes126
– breaking in126
Brakes
– ABS89
– BMW Maintenance
System227
– Brake Force Display97
– breaking in126
– parking brake57
– service requirements80
Brakes, refer to Braking
safely128Brake system126
– BMW Maintenance
System227
– breaking in126
– disc brakes128
Breakdown services, refer to
Roadside Assistance238
Breaking in the clutch126
Breaking in the differential,
refer to Engine and
differential126
Break-in period126
Brightness of the Control
Display87
Bulb changing, refer to Lamps
and bulbs233
Button for starting the engine,
refer to Start/stop button55
Buttons on the steering
wheel11
C
California Proposition 65
warning6
Call
– accepting188
– ending188
– rejecting188
Calling, refer to Phone
numbers, dialing188
Calling, refer to Telephone
owner's manual
Can holders, refer to
Cupholders116
Capacities250
Capacity of the cargo area249
Car battery, refer to Vehicle
battery237
Car care, refer to Care229