2009 BMW Z4 SDRIVE30I ROADSTER fuel

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Fuel specifications
Do not fill the tank with leaded fuel as this
would cause permanent damage to the
catalytic converter.
Do not fill the tank with E85, i.e. fuel containing
85 % ethanol, nor with Fl exFuel. Otherwise, the
engine and fuel suppl y system will be dam-
aged. <
Required fuel
Super Premium Gasoline/AKI 91
This gasoline is hi ghly recommended.
However, you may also use gasoline with less
AKI. The minimum AKI Rating is:
> Z4 sDrive30i: 87
> Z4 sDrive35i: 89
If you use gasoline with this minimum AKI Rat-
ing, the engine may produce knocking sounds
when starting at high outside temperatures.
This has no effect on the engine life.
Do not use any gasoline below the speci-
fied minimum fuel grade. Otherwise the
engine could be damaged. <
Use high-quality brands
Field experience has indicated significant dif-
ferences in fuel quality: volatility, composition,
additives, etc., among ga solines offered for sale
in the United States and Canada. Fuels contain-
ing up to and including 10 % ethanol or other
oxygenates with up to 2.8 % oxygen by weight,
that is, 15 % MTBE or 3 % methanol plus an
equivalent amount of co-solvent, will not void
the applicable warranti es with respect to
defects in materials or workmanship.
The use of poor-quality fuels may result in
driveability, starting and stalling problems
especially under certai n environmental condi-
tions such as high ambient temperature and
high altitude.
Should you encounter driveability problems
which you suspect could be related to the fuel
you are using, we recommend that you respond
by switching to a recognized high-quality brand such as gasoline
that is advertised as Top Tier
Detergent Gasoline.
Failure to comply with these recommendations
may also result in un scheduled maintenance. <

Wheels and tires
196
Recommended tire brands
Certain makes of tire are recommended by
BMW for each tire size. They are marked with a
clearly visible BMW designation on the sidewall
of the tire.
When properly used, these tires meet the high-
est standards in terms of safety and handling
characteristics.
Special characteristics of winter tires
BMW recommends winter tires for winter roads
or at temperatures below +45 7/+7 6.
Although all-season M+ S tires provide better
winter traction than summer tires, they gener-
ally fail to provide the same levels of cold-
weather performance as winter tires.
Pay attention to speed
Always comply with the speed limit for the
winter tires mounted on your car; failure
to do so could result in tire damage and acci-
dents. <
If the car is capable of speeds higher than that
permitted for the winter ti res, a label stating the
maximum permitted speed for the mounted
tires must be displayed in your field of view.
Specialist tire dealers and your BMW center
can supply these labels.
Storage
Always store wheels and tires in a cool, dry
place with as little exposure to light as possible.
Always protect tires agains t all contact with oil,
grease and fuels. Do not exceed the maximum
tire inflation pressure indicated on the sidewall
of the tire.
Swapping wheels between axles
BMW advises against swapping wheels
between the front and rear axles, even if all tires
have the same size, as th is could impair driving
characteristics. If the tires are of mixed sizes,
swapping wheels betwee n the axles is not per-
missible.
Snow chains*
Only certain fine-link sn ow chains have been
tested by BMW, classified as safe for use and
recommended. Consult your BMW center for
more information.
Snow chains must be mounted in pairs and on
the rear wheels only. Observe the manufac-
turer's instructions when mounting snow
chains. Do not exceed a speed of 30 mph or
50 km/h.
Do not initialize the Flat Tire Monitor if
snow chains are mounted, otherwise the
instrument might issue an incorrect reading.
When driving with snow chains, you may find it
helpful to activate DTC temporarily, refer to
page 78.<

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This socket is located on the driver's side to the
left, on the bottom of the instrument panel
underneath a cover.
Exhaust emission values
The warning lamp lights up:
The vehicle emissions are raised. The
trip can be continued. Have the car
checked as soon as possible.
Canadian models display this
warning lamp.
The lamp flashes under certain condi-
tions. This indicates excessive misfiring in the
engine. If this happens, you should reduce your
speed and visit your nearest BMW center as
soon as possible. Severe engine misfiring can
quickly lead to serious damage of emissions-
related components, espe cially the catalytic
converter.
The warning lamp comes on if the gas
cap is not properly tightened and the
OBD system assumes that fuel vapor
is escaping. If the gas ca p is then tightened, the
warning lamp should go out within a few days.
Data recorders
Your vehicle may be equipped with one or sev-
eral measuring or diagnostic modules or a
device for recording or sending certain vehicle
data or information. In addition, if you have
signed a service contract for BMW Assist, cer-
tain vehicle data may be transmitted or
recorded in order to fa cilitate the corresponding
services.

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7-gear sport automatic transmission
with dual clutch
Before driving into an automatic car wash, per-
form the following steps to ensure that the vehi-
cle can roll:
1. Insert the remote control, even with conve-
nient access, into the ignition lock.
2. Engage transmission position N.
3. Release the parking brake.
4. Switch off the engine.
5. Leave the remote control in the ignition lock
so that the vehicle can roll.
Transmission position P is engaged:
> Automatically after approx. 30 minutes
> When you take the remo te control out of the
ignition lock
Steam jets / high -pressure washers
When using steam jets or high-pressure
washers, ensure that you maintain suffi-
cient clearance to the vehicle and do not exceed
a temperature of 60°C.
Insufficient clearance or excessive pressure or
temperature can lead to component damage or
water penetration. Follow the operating instruc-
tions of the high-pressure washer. <
When using high-pressure washers, do
not spray against the seals of the retract-
able hardtop, the sensor s and the cameras, e.g.
of the Park Distance Control or Rear View Cam-
era, for an extended period and maintain a dis-
tance of at least 12 in/30 cm. <
Manual car wash
When washing the vehicle by hand, use large
quantities of water and car shampoo if neces-
sary. Clean the vehicle with a sponge or wash-
ing brush, applying light pressure only.
Before cleaning the windshield, deacti-
vate the rain sensor or switch off the igni-
tion to prevent unintent ional activation of the
wipers. <
Observe local regulations pertaining to
washing vehicles by hand. <
Headlamps
Do not rub them dry and do not use abrasive or
corrosive cleaning agents.
Remove contamination, such as insects, by
soaking with shampoo or insect remover and
then rinsing with plenty of water.
Thaw ice with a windshield de-icer and do not
use an ice scraper.
Windows
Clean the inside and outside surfaces of the
windows and the mirrors with window cleaner.
Do not clean the mirrors with cleaners
containing quartz. <
Retractable hardtop
Proceed as you would in a normal car wash.
When you open a we t hardtop, water
drops may run into the cargo bay. If nec-
essary, remove items from the cargo bay
beforehand to avoid water stains or soiling. <
Paintwork care
Regular care contributes to value retention and
protects the paintwork against the long-term
effects of damaging substances.
Region-specific environmental influences can
damage the vehicle paintwork. Therefore, it is
important to adapt the frequency and scope of
car care accordingly.
Immediately remove aggressive materials such
as spilled fuel, oil, grease, brake fluid, tree sap or
bird droppings to prevent damage to the
paintwork.
Repairing paintwork damage
Immediately repair scratches or similar
damage, such as that caused by stones
hitting the vehicle, wher e necessary to prevent
rusting. <
BMW recommends having paintwork damage
repaired by a profession al paint repair work-
shop according to BMW specifications using
original BMW paint materials.

Technical data
222
Weights
Capacities
Z4 sDrive30iZ4 sDrive35i
Approved gross weight
> with manual transmission lbs/kg 3,924/1,7804,134/1,875
> with automatic transmission lbs/kg 3,990/1,8104,178/1,895
Load lbs/kg562/255 562/255
Approved front axle load lbs/kg 1,808/8201,918/870
Approved rear axle load lbs/kg 2,227/1,0102,271/1,030
Cargo bay capacity cu ft/l 6.4 - 10.9/180 - 310 6.4 - 10.9/180 - 310
Notes
Fuel tank US gal/liters approx. 15.5/55 Fuel grade:
page 189
including reserve of US gal/liters approx. 2.1/8.0
Window washer system For more details:
page61
including headlamp washers US qt/liters approx. 6.3/6.0

Everything from A to Z
230
Everything from A to Z
Index
"..." Identifies Control Display texts used to select
individual functions and
refers you to the page where
these texts can be found.
A
ABS Antilock Brake System 78
Acceleration assistant, refer to Launch Control 58
Accident, refer to Sending an Emergency Request 213
Activated-charcoal filter for
automatic climate
control 97
Adaptive Head Light 89
Additional connection of the music player in the mobile
phone 158
Additives
– coolant 200
Address for navigation,
entering 119
Adjusting temperature inside the car, refer to Air
conditioner 93
Adjusting temperature inside the car, refer to Automatic
climate control 95
Adjusting the thigh support 42
Adjusting the tone during audio operation, refer to
Tone control 138
Airbags 85
– indicator/warning lamp 87
– sitting safely 41
Air conditioner 92 Air conditioning mode
– air conditioner
93
– automatic climate control 95
– ventilation 94,97
Air distribution
– automatic 96
– individual 93
– manual 93
Air flow rate 93,96
Airing, refer to Ventilation 94
Airing, refer to Ventilation 94,97
Air outlets, refer to Air vents 92
Air pressure, refer to Tire
inflation pressure 190
Air recirculation, refer to Recirculated-air
mode 93,97
Air supply
– air conditioner 93
– automatic climate control 95
– ventilation 94,97
Air vents 92
AKI, refer to Fuel specifications 189
Alarm system 33
– avoiding unintentional alarms 34
–

interior motion sensor 34
– switching off an alarm 34
– tilt alarm sensor 34
Albums of music
collection 155
All-season tires, refer to Winter tires 196
AM, waveband 141
Ambient air, refer to Recirculated-air
mode 93,97
Antenna for mobile phone 164Antifreeze
– coolant
200
– washer fluid 61
Antilock Brake System ABS 78
Anti-theft alarm system, refer
to Alarm system 33
Anti-theft system 29
– for lug bolts, refer to Lug bolt
lock 211
Approved axle loads, refer to Weights 222
Approved gross vehicle weight, refer to Weights 222
Armrest, refer to Center
armrest 102
Arrival time, refer to Computer 66
Ashtray
– front 104
Assistance systems, refer to
Driving stability control
systems 78
AUC automatic recirculated-
air control 97
Audio 138
– controls 138
– switching on/off 138
– tone control 138
– volume 138
Audio device, external 102
Automatic
– air distribution 96
– air flow rate 96
– cruise control 61
– headlamp control 88
Automatic car washes 204
Automatic climate control 92
– automatic air distribution 96
Automatic curb monitor 46
Automatic recirculated-air control AUC 97

Reference 231
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Mobility
Automatic Service Request 184
Automatic transmission with Steptronic 53
– interlock 53,54
– overriding selector lever lock 55
– shiftlock, refer to Changing
selector lever position 54
– sport program 54
– towing 215
– tow-starting 215
AUTO program for automatic
climate control 96
AUX-IN
– port 102
AUX-IN port 158
Average fuel consumption 66
– setting the units 68
Average speed 66
Avoiding unintentional alarms 34
Axle loads, refer to Weights 222
B
Backrest contour, refer to
Lumbar support 43
Backrests, refer to Seat adjustment 42
Backrest width adjustment 43
Backup lamps
– replacing bulb 210
Backup lamps, refer to Tail lamps 210
Band-aids, refer to First-aid
pouch 214
Bar, refer to Towing methods 216
Base plate for telephone or mobile phone
– refer to Snap-in adapter 174
– refer to Snap-in adapter in the center armrest storage
compartment 102
Bass, tone setting 138Battery
212
– charging 212
– disposal 36,212
– jump starting 214
– remote control 28
– temporary power failure 212
Battery for mobile phone 175
Battery renewal
– remote control 36
– remote control for vehicle 36
Being towed 216
Belts, refer to Safety belts 44
Belt tensioner, refer to Safety
belts 44
Beverage holders, refer to Cup holders 103
Blower, refer to Air flow rate 93,96
Bluetooth, activating/
deactivating 166
Bluetooth, refer to separate Owner's Manual
BMW
– car shampoo 207
BMW Assist, activating 180
BMW Assist 178
BMW center 184
BMW Homepage 4
BMW Maintenance System 202
BMW Search 180
BMW webpage 4
Bottle holders, refer to Cup holders 103
Brake
– parking brake 52
Brake assist, refer to Dynamic
Brake Control DBC 78
Brake fluid, refer to Service requirements 69
Brake lamps
– replacing bulb 210
Br
ake pads 110
– breaking in 110
Brake rotors 112
– brakes 110
– breaking in 110 Brakes
– ABS
78
– BMW Maintenance System 202
– breaking in 110
– service requirements 69
Brakes, refer to Braking safely 112
Brake system 110
– BMW Maintenance System 202
– breaking in 110
– disc brakes 112
Breakdown services, refer to Roadside Assistance 213
Breaking in the clutch 110
Breaking in the differential, refer to Engine and
differential 110
Break-in period 110
Brightness of Control Display 76
Bulb changing, refer to Lamps and bulbs 208
Button for starting the engine,
refer to Start/stop button 50
Buttons on the steering wheel 11
Buttons on the steering wheel 11
C
California Proposition 65
warning 6
Call
– accepting 167
– ending 168
– rejecting 168
Calling, refer to Phone
numbers, dialing 168
Can holders, refer to Cup holders 103
Capacities 222
Capacity of the cargo bay 222
Car battery, refer to Vehicle
battery 212
Car care, refer to Care 204

Reference 233
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Mobility
Congestion
– refer to Route, bypassing sections 129
Connecting vacuum cleaner, refer to Connecting
electrical appliances 104
Consumption, refer to Average consumption 66
Consumption display
– average consumption 66
Contacts 176
Control Center, refer to iDrive 16
Control Display, refer to iDrive
– adjusting brightness 76
Control Display, refer to
iDrive 16
Controller, refer to iDrive 16
controls and displays 10
Control unit, refer to iDrive 16
Convenient access 35
– replacing the battery 36
– what to observe before entering a car wash 36
Convenient loading 30
Convenient operation 31
– retractable hardtop 30
– windows 30
Convertible
– enlarging cargo bay 38,105
Coolant 200
– checking level 201
Coolant temperature 65
Cooling, maximum 96
Cooling fluid, refer to Coolant 200
Cooling system, refer to
Coolant 200
Copyright 2
Corner-illuminating lamps,
refer to Adaptive
Head Light 89
Cornering lamps, refer to
Adaptive Head Light 89
Correct tires 195
Country codes DVD 148
Courtesy lamps, refer to Interior lamps 90 Criteria for route
128
Cross-hairs in navigation 124
Cruise control 61
– malfunction 63
Cruising range 65
Cup holders 103
Curb weight, refer to Weights 222
Current playback
– external devices 160
– music collection 155
Current position, displayin
g134
Customer Relations 183
D
Dashboard, refer to
Cockpit 10
Dashboard, refer to Instrument cluster 12
Dashboard lighting, refer to
Instrument lighting 90
Data, technical 220
– dimensions 221
– engine 220
– weights 222
Data recorders 203
Data transfer 184
Date
– date format 73
– setting 72
Daytime running lamps 89
DBC Dynamic Brake
Control 78
DCC, refer to Cruise control 61
Deactivating passenger airbags 86
Deadlocking, refer to
Locking 30
Defect
– door lock 32
– fuel filler door 188
Defogging windows 94
Defrosting windows 94
Defrost position, refer to Defrosting windows 94Destination for navigation
– entering by voice
125
– entry 119
– home address 122
– manual entry 119
– selecting via map 124
Destination guidance 128
– bypassing a
route section 129
– changing specified route 128
– continuing 128
– starting 128
– voice instructions 129
– volume of voice instructions 130
Destination state/province, entering for navigation 119
Destination town/city,
entering for navigation 119
Digital clock 64
Digital compass 100
Digital radio, refer to High Definition Radio 142
Dimensions 221
Directional indicators, refer to Turn signals 59
Direction instructions, refer to
Voice instructions 129
Directory for navigation, refer to Address book 121
Displace

ment, refer to Engine
data 220
Display, refer to iDrive
controls 16
Display lighting, refer to Instrument lighting 90
Displays
– on the Control Display 16
Displays, refer to Instrument
cluster 12
Displays and controls 10
Disposal
– coolant 200
– remote control battery 36
– vehicle battery 212
Distance remaining to service, refer to Service
requirements 69