2010 BMW Z4 SDRIVE30I brake rotor

Things to remember when driving
112
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.
Do not drive with full-throttle operation, and do
not use the transmission's kickdown mode or
Launch Control.
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 additional mirrors and the luggage rack
when they are no longer in use. Mounted parts
affect the vehicle's aerodynamics and increase
fuel consumption.
Close both windows
An open window causes higher air resistance
and thus increases fuel consumption.
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
114 The risk of hydroplaning increases with declin-
ing tread depth on the tires, refer also to Mini-
mum tread depth on page198.
Driving through water
Drive though calm water only if it is not
deeper than 1 ft/25 cm and at this height
no faster than walking speed, up to 6 mph/
10 km/h. 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 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. 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.<
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 page54.
7-gear sport automatic transmission with
dual clutch: Never drive with the trans-
mission in neutral 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.
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 237
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Automatic high beams and
low beams, refer to High-
beam assistant90
Automatic recirculated-air
control AUC98
Automatic Service
Request188
Automatic transmission with
Steptronic53
– interlock53,54
– overriding selector lever
lock55
– shiftlock, refer to Changing
selector lever position54
– sport program54
– towing220
– tow-starting220
AUTO program for automatic
climate control97
AUX-IN port104,163
Available services188
Average fuel consumption66
– setting the units68
Average speed66
Avoid highways in
navigation130
Avoiding unintentional
alarms34
Axle loads, refer to
Weights228
B
Backrest contour, refer to
Lumbar support43
Backrests, refer to Seat
adjustment42
Backrest width adjustment43
Backup lamps
– replacing bulb214
Backup lamps, refer to Tail
lamps214
Band-aids, refer to First-aid
pouch219
Bar, refer to Towing
methods221Base plate for telephone or
mobile phone
– refer to Snap-in adapter180
– refer to Snap-in adapter in
the center armrest storage
compartment104
Bass, tone setting140
Battery216
– charging216
– disposal36,216
– jump-starting219
– remote control28
– temporary power failure216
Battery for mobile phone181
Battery renewal
– remote control36
– remote control for vehicle36
Being towed221
Belts, refer to Safety belts44
Belt tensioner, refer to Safety
belts44
Beverage holders, refer to
Cupholders105
Blower, refer to Air flow
rate94,97
Bluetooth, activating/
deactivating173
Bluetooth, refer to separate
Owner's Manual
BMW
– car shampoo211
BMW Assist,
activating186,188
BMW Assist184
BMW Homepage4
BMW Maintenance
System206
BMW Search186
BMW webpage4
Bottle holders, refer to
Cupholders105
Brake
– parking brake52
Brake Assist, refer to Dynamic
Brake Control DBC78Brake fluid, refer to Service
requirements69
Brake Force Display85
Brake lamps
– Brake Force Display85
– replacing bulb214
Brake pads112
– breaking in112
Brake rotors114
– brakes112
– breaking in112
Brakes
– ABS78
– BMW Maintenance
System206
– breaking in112
– service requirements69
Brakes, refer to Braking
safely114
Brake system112
– BMW Maintenance
System206
– breaking in112
– disc brakes114
Breakdown services, refer to
Roadside Assistance218
Breaking in the clutch112
Breaking in the differential,
refer to Engine and
differential112
Break-in period112
Brightness of Control
Display76
Bulb changing, refer to Lamps
and bulbs212
Button for starting the engine,
refer to Start/stop button50
Buttons on the steering
wheel11
C
California Proposition 65
warning6