winter tires BMW Z4 ROADSTER SDRIVE35I 2010 E89 Owner's Manual

Wheels and tires
198
Temperature
The temperature grades are A, the highest, B,
and C, representing the tire's resistance to the
generation of heat and its ability to dissipate
heat when tested under controlled conditions
on a specified indoor laboratory test wheel.
Sustained high temperature can cause the
material of the tire to degenerate and reduce
tire life, and excessive temperature can lead to
sudden tire failure. The grade C corresponds to
a level of performance which all passenger car
tires must meet under the Federal Motor Vehi-
cle Safety Standard No. 109. Grades B and A
represent higher levels of performance on the
laboratory test wheel than the minimum
required by law.
The temperature grade for this tire is
established for a tire that is properly
inflated and not overloaded. Excessive speed,
underinflation, or excessive loading, either sep-
arately or in combination, can cause heat
buildup and possible tire failure.<
RSC – run-flat tires
You will recognize run-flat tires by a circular
symbol containing the letters RSC on the side
of the tire, refer to page199.
M+S
Winter and all-season tires.
These have better winter properties than sum-
mer tires.
XL
Designation for specially reinforced tires.
Tire condition
Inspect your tires frequently for tread wear,
signs of damage and for foreign objects lodged
in the tread. Check the tread depth.
Minimum tread depth
The tread depth should not drop below 1/8 in/
3mm, although, for example, European legisla-
tion only specifies a minimum tread depth of 1/16 in/1.6 mm. At tread depths below 1/8 in/
3 mm there is an increased risk of high-speed
hydroplaning, even when only small amounts of
water are present on the road surface.
When winter tires wear down past a tread depth
of 1/6 in/4 mm, they become perceptibly less
suitable for winter conditions. In the interest of
safety, new tires should be installed.
Wear indicators in the base of the tread groove
are distributed around the tire's circumference;
the letters TWI, for Tread Wear Indicator, on the
tire's sidewalls identify tires that incorporate
these wear indicators. Once the tire tread has
worn down to the wear indicators, the tire has
worn to a depth of 1/16 in/1.6 mm.
Wheel/tire damage
Please note that low-profile tires cause wheels,
tires and suspension parts to be more sus-
ceptible to road hazard and consequential
damages.
Unusual vibrations encountered during normal
vehicle operation can indicate tire failure or
some other vehicle defect. This can, for exam-
ple, be caused by driving over curbs. The same
applies to any other abnormal road behavior,
such as pulling severely to the right or left.
In these cases, reduce speed immedi-
ately and have wheels and tires thor-
oughly checked. To do so, drive carefully to the
nearest BMW center or tire shop that works
according to BMW repair procedures with cor-
respondingly trained personnel. If necessary,
have the vehicle towed there.
Otherwise, tire damage can be extremely dan-
gerous for vehicle occupants and other road
users.<

Mobility
199Reference
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Tire age
For various reasons, such as the development
of brittleness, BMW recommends tire replace-
ment after no more than 6 years, regardless of
the actual wear of the tires.
The manufacturing date of tires is contained in
the tire coding:
DOT ... 3709 means that the tire was manufac-
tured in week 37 of 2009.
Run-flat tires
The symbol identifying run-flat tires is a circle
with the letters RSC on the sidewall.
Run-flat tires comprise a conditionally self-sup-
porting tire and a special rim. The reinforce-
ment in the sidewalls ensures that the tire can
continue to be used subject to certain restric-
tions, even if depressurized.
For information on continuing to drive with a flat
tire, refer to Indication of a flat tire, page81.
New wheels and tires
Have new wheels and tires installed only
by your BMW center or tire shop that
works according to BMW repair procedures
with correspondingly trained personnel. If this
work is not carried out properly, there is a dan-
ger of subsequent damage and related safety
hazards. Make sure that the new wheels are
balanced.<
Retreaded tires
BMW recommends that you do not use
retreaded tires, since driving safety may
be impaired. The causes for this include poten-
tially different tire casing structures and often
wide variations in tire age, which can result in a
limited service life.<
Correct wheels and tires
When mounting new tires or changing over
from summer to winter tires and vice versa,
mount run-flat tires for your own safety. In the
event of a flat, no spare wheel is available. Your
BMW center will be glad to advise you.
BMW recommends that you use only
wheel and tire combinations that BMW
has tested and approved for your particular
vehicle. Variations in factors such as manufac-
turing tolerances mean that even wheels and
tires with identical official size ratings could
actually have different dimensions, which could
lead to body contact and thus to severe acci-
dents. If non-approved wheels and tires are
used, BMW cannot evaluate their suitability,
and therefore cannot guarantee their driving
safety.<
You can inquire about the right wheel/tire com-
bination at your BMW center.
The correct combination of wheels and tires is
also necessary to ensure reliable operation of
various vehicle systems such as ABS, DSC
or TPM.
To maintain good handling and vehicle
response, use only tires of a single brand and
tread configuration. After a tire has been dam-
aged, mount the previous wheel and tire combi-
nation again as soon as possible.
Wheels with Tire Pressure Monitor
TPM electronics
When mounting new tires or changing over
from summer to winter tires, or vice versa, only
use wheels with TPM electronics; otherwise,
the Tire Pressure Monitor may not be able to
detect a puncture, refer to page82. Your BMW
center will be glad to advise you.

Wheels and tires
200
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 +457/+76.
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 tires, 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 against 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 this could impair driving
characteristics. If the tires are of mixed sizes,
swapping wheels between the axles is not per-
missible.
Snow chains*
Only certain fine-link snow 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 page78.<

Mobility
215Reference
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
2.Pull out the bulb holder, see arrow, and
change the bulb.
3.Attach the bulb holder.
4.Reattach the cover.
License plate lamp, rear lamp, center
brake lamp and turn signal
These lamps use LED technology for operation.
In the event of a malfunction, please contact
your BMW center or a workshop that works
according to BMW repair procedures with cor-
respondingly trained personnel.
Changing wheels
Your BMW is equipped with run-flat tires as
standard. This removes the need to change a
wheel immediately in the event of a puncture.
For information on continuing to drive with a
damaged tire, refer to Indication of a flat tire
on page81.
The symbol identifying run-flat tires is a circle
with the letters RSC on the sidewall, refer to
Run-flat tires, page199.
When mounting new tires or changing over
from summer to winter tires and vice versa,
mount run-flat tires for your own safety. In the
event of a flat, no spare wheel is available. Your
BMW center will be glad to advise you. Refer
also to New wheels and tires, page199.
The tools for changing wheels are avail-
able as optional accessories from your
BMW center.<
Jack mounting points
The jacking points are at the positions shown in
the illustration.
Lug bolt lock*
1Lug bolt for adapter
2Adapter, in onboard vehicle tool kit
Removing the wind deflector
1.Remove the adapter 2 from the onboard
vehicle tool kit and insert it in the lug bolt.
2.Unscrew the lug bolt1.
Remove the adapter after screwing the lug bolt
back on.
The code number is stamped on the front of the
adapter. Please note down this number and
keep it in a safe place in case the adapter should
get lost.

Everything from A to Z
236
Everything from A to Z
Index
A
ABS Antilock Brake
System78
Acceleration assistant, refer to
Launch Control58
Accident, refer to Sending an
Emergency Request218
Activated-charcoal filter for
automatic climate control98
Adaptive light control89
Additional connection of the
music player in the mobile
phone163
Additives
– coolant204
– engine oil204
Address for navigation
– entering121
Adjusting temperature inside
the car, refer to Air
conditioner94
Adjusting temperature inside
the car, refer to Automatic
climate control96
Adjusting the thigh support42
Adjusting the tone during
audio operation, refer to
Tone control140
Airbags85
– indicator/warning lamp87
– sitting safely41
Air conditioner93
Air conditioning mode
– air conditioner94
– automatic climate control96
– ventilation95,98Air distribution
– automatic97
– individual94
– manual94
Air flow rate94,97
Airing, refer to
Ventilation95,98
Air outlets, refer to Air
vents93
Air pressure, refer to Tire
inflation pressure194
Air recirculation, refer to
Recirculated-air
mode94,98
Air supply
– air conditioner94
– automatic climate control96
– ventilation95,98
Air vents93
AKI, refer to Fuel
specifications193
Alarm system33
– avoiding unintentional
alarms34
– interior motion sensor34
– switching off an alarm34
– tilt alarm sensor34
Albums of music
collection160
All-season tires, refer to
Winter tires200
AM, waveband143
Ambient air, refer to
Recirculated-air
mode94,98
Antenna for mobile phone170
Antifreeze
– coolant204
– washer fluid61Antilock Brake System
ABS78
Anti-theft alarm system, refer
to Alarm system33
Anti-theft system29
– for lug bolts, refer to Lug bolt
lock215
Approved axle loads, refer to
Weights228
Approved engine oils, refer to
Specified engine oils204
Approved gross vehicle
weight, refer to Weights228
Armrest, refer to Center
armrest104
Arrival time, refer to
Computer66
Assistance systems, refer to
Driving stability control
systems78
AUC automatic recirculated-
air control98
Audio140
– controls140
– switching on/off140
– tone control140
– volume140
Audio device, external104
Automatic
– air distribution97
– air flow rate97
– cruise control61
– headlamp control88
Automatic car washes208
Automatic climate control93
– automatic air distribution97
Automatic curb monitor46

Reference 243
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Keyless opening and closing,
refer to Comfort Access34
Key Memory, refer to Personal
Profile28
Kickdown54
– automatic transmission with
Steptronic54
Knock control193
L
Lamps
– automatic headlamp
control88
– parking lamps/low beams88
Lamps and bulbs, replacing
bulbs212
Language, changing on
Control Display75
Lap-and-shoulder belt, refer
to Safety belts44
Lashing eyes, refer to
Securing cargo116
Last destinations124
Launch Control58
Leather care210
LED Light-emitting
diodes212
Length, refer to
Dimensions227
License plate lamp, replacing
bulb215
Light
– high-beam assistant90
– refer to High-beam
assistant90
Light-alloy wheels210
Light-emitting diodes
LED212
Lighter
– connecting electrical
appliances106
Lighting
– instruments91
– lamps and bulbs212
– vehicle, refer to Lamps88Light switch88
Limit, refer to Speed limit74
Load securing equipment,
refer to Securing cargo116
Lockable lug bolts, refer to
Lug bolt lock215
Lock buttons, doors, refer to
Locking32
Locking
– adjusting confirmation
signal31
– from inside32
– from outside30
– without remote control, refer
to Comfort Access34
Locking and unlocking doors
– confirmation signals31
– from inside32
– from outside29
Low beam control, refer to
High-beam assistant90
Low-beam headlamps88
– automatic88
Lower back support, refer to
Lumbar support43
Lug bolt lock215
Luggage compartment lid32
– Comfort Access
35
– emergency release33
– opening from inside32
– opening from outside33
– remote control30
Lumbar support43
M
M+S tires, refer to Winter
tires200
Maintenance, refer to Service
Booklet
Maintenance system206
Malfunction
– automatic transmission with
Steptronic55
– tires81Malfunction warnings, refer to
Check Control73
Managing music161
Manual air distribution94
Manual car wash209
Manual mode, automatic
transmission with
Steptronic54
Manual operation
– door lock31
– driver's door31
– fuel filler flap192
– transmission lock58
– transmission lock, automatic
transmission55
Manual transmission53
Map display132
Map for navigation
– changing scale133
– entering destination126
Master key, refer to Remote
control with integrated
key28
Maximum cooling97
Maximum speed
– with winter tires200
M dual clutch transmission
with Drivelogic
– Launch Control58
– manually releasing
transmission lock58
– neutral56
– reverse gear56
Measurements, refer to
Dimensions227
Memory, refer to Seat and
mirror memory43
MENU button16
Menus, refer to iDrive16
Messages176
Messages from the concierge
service177

Everything from A to Z
246 Reception
– quality144
– radio station144
Recirculated-air mode94,98
Recirculation of air, refer to
Recirculated-air
mode94,98
Reclining seat, refer to
Backrest42
Refueling192
Releasing
– hood201
Remaining distance, refer to
Cruising range66
Remote control28
– battery renewal36
– Comfort Access34
– garage door opener100
– luggage compartment lid30
– malfunction31,36
– removing from the ignition
lock50
– service data206
Replacement remote
control28
Replacing bulbs, refer to
Lamps and bulbs212
Replacing tires199
Replacing tires, refer to New
wheels and tires199
Reporting safety defects6
Reserve warning, refer to Fuel
gauge65
Reset, refer to Resetting tone
settings142
Restraint systems
– for children48
– refer to Safety belts44
Retractable hardtop
– care, refer to Caring for your
vehicle brochure
– convenient operation30
– opening and closing39
– remote control30
retractable hardtop38
Reverse
– CD changer153
– CD player153Reverse gear56
– automatic transmission with
Steptronic54
– manual transmission53
Road map132
Roadside
Assistance185,218
Roadside parking lamps90
Roadworthiness test, refer to
Service requirements69
Roof load capacity228
Rope, refer to Tow-starting,
towing away222
Rotary/pushbutton, refer to
iDrive16
Route130,131
– bypassing sections131
– changing130,131
– changing criteria130
– displaying streets or towns/
cities131
– map display132
– selecting130
Route instructions, refer to
Destination guidance
through voice
instructions132
Route map, refer to Map
display132
Route section, changing131
Route selection130
RSC Runflat System
Component, refer to Run-
flat tires199
Runflat System Component
RSC, refer to Run-flat
tires199
Run-flat tires199
– continuing driving with a
damaged tire82
– flat tire81
– Flat Tire Monitor81
– new tires199
– replacing199
– tire inflation pressure194
– winter tires200
S
Safety-belt height
adjustment45
Safety belts44
– damage45
– indicator/warning lamp45
– reminder45
– sitting safely41
Safety systems
– airbags85
– Antilock Brake System
ABS78
– brake system78
– driving stability control
systems78
– Dynamic Stability Control
DSC78
– safety belts44
Safety tires, refer to Run-flat
tires199
Satellite radio146
– enabling or unsubscribing
from a channel146
– favorites148
– selecting channel147
– storing channel147
– timeshift148
– Traffic Jump149
Saving fuel112
Screen, refer to iDrive
controls16
Screw thread for tow
fitting220
SDARS, refer to Satellite
radio146
Seat adjustment
– electric42
– mechanical42
Seat and mirror memory43
Seat belt reminder, refer to
"Fasten safety belts"
reminder45
Seat heating43

Reference 247
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Seats41
– adjusting electrically42
– adjusting the seats42
– heating43
– memory, refer to Seat and
mirror memory43
– saving a setting, refer to Seat
and mirror memory43
– sitting safely41
Securing cargo107
Securing the vehicle
– from inside32
– from outside29
Selecting new scale for
navigation133
Selector lever56
– automatic transmission with
Steptronic54
Selector lever lock, refer to
Changing selector lever
positions, shiftlock54
Selector lever positions
– automatic transmission with
Steptronic54
Service, refer to Roadside
Assistance218
Service car, refer to Roadside
Assistance218
Service data in the remote
control206
Service Interval Display, refer
to Condition Based Service
CBS206
Service Request187
Service requirement display,
refer to Condition Based
Service CBS206
Service requirements69
Services status188
Servotronic85
Settings
– changing on Control
Display75
– clock, 12h/24h mode72
– DVD154
– language75
Settings and information68Settings for the map
display133
Shifting57
Shifting, sport automatic
transmission57
Shifting gears
– automatic transmission with
Steptronic54
– manual transmission53
Shiftlock
– automatic transmission,
refer to Changing selector
lever positions54
Shift paddles on steering
wheel57
Short commands for the voice
activation system229
Short route in navigation, refer
to Selecting route
130
Side airbags85
Side windows, refer to
Windows36
Signal horn, refer to
Horn10,11
Sitting safely41
– with airbags41
– with safety belts41
Ski bag for convertible, refer to
Through-loading opening
with integrated transport
bag106
Slot for remote control50
Snap-in adapter
– inserting/removing180
– use170
Snap-in adapter, refer to
Center armrest storage
compartment104
Socket, Onboard Diagnosis
OBD207
Socket, refer to Connecting
electrical appliances106
SOS, refer to Sending an
Emergency Request218
Sound output for
entertainment on/off140
Spare fuses,216
Spare fuses, refer to
Fuses216Special destinations124
Special destinations,
displaying126
Special oils, refer to Specified
engine oils204
Specified engine oils204
Speed
– run-flat tires82
– with winter tires200
Speed limit74
Speed limit warning, refer to
Speed limit74
Speedometer12
Speed Volume142
SPORT+ program, Dynamic
Driving Control79,80
SPORT program, Dynamic
Driving Control79,80
Sport program with sport
automatic transmission57
Spray nozzles, refer to
Cleaning windshield and
headlamps61
Stability control, refer to
Driving stability control
systems78,79
Start/stop button50
– starting the engine51
– switching off the engine52
Starting, refer to Starting the
engine51
Starting assistance, refer to
Jump-starting219
Starting difficulties
– jump-starting219
Starting the engine
– start/stop button50
State/province, for
navigation121
Station, refer to Radio143
Station, selecting
– radio143
Status of this Owner's Manual
at time of printing5
Steam jet208,209

Everything from A to Z
248 Steering wheel46
– adjustment46
– buttons on steering
wheel11
– lock50
– locking with Comfort
Access35
– shift paddles57
Steering wheel buttons, refer
to Shift paddles57
Steptronic, refer to Automatic
transmission with
Steptronic53
Storage211
Storage compartments104
Storage nets106
Stored trip, calling up129
Storing a destination in the
address book123
Storing music158
Storing seat positions, refer to
Seat and mirror memory43
Storing tires200
Stowage, refer to Storage
compartments104
Stowing cargo116
Street, entering,
navigation122
Summer tires, refer to Wheels
and tires194
Surface ice, refer to Outside
temperature warning64
Surround141
SVCD153
SW, waveband143
Switches, refer to Cockpit10
Switching off
– engine52
Switching off the engine
– start/stop button50
Switching on
– audio140
– CD changer140
– CD player140
– radio140
Symbols4
– status information20
T
Tachometer64
Tailgate
– opening from inside32
Tailgate, refer to Luggage
compartment lid32
Tail lamps214
– replacing bulb214
Tank contents, refer to
Capacities228
Technical data226
– capacities228
– dimensions227
Technical modifications, refer
to For your own safety5
Telephone170
– installation location, refer to
Center armrest104
– refer to separate Owner's
Manual
– voice commands178
TeleService185
TeleService Diagnosis186
TeleService Help186
Temperature
– air conditioner95
– automatic climate control96
– changing unit of measure68
– coolant, refer to Coolant
temperature65
Temperature display
– outside temperature64
– outside temperature
warning64
– setting the units68
Tempomat, refer to Cruise
control61
Tensioning straps, refer to
Securing cargo116
The individual vehicle5
Third brake lamp, refer to
Center brake lamp215
Through-loading opening with
integrated transport
bag106
Tilt alarm sensor34
Tilt function, passenger-side
mirror46Tire inflation pressure194
– loss81,83
Tire pressure monitoring,
refer to Flat Tire Monitor81
Tire Pressure Monitor
TPM82
– resetting the system83
– system limitations82
– warning lamp83
Tire puncture, refer to Flat Tire
Monitor81
Tire Quality Grading197
Tires
– age197,199
– air loss83
– breaking in112
– changing, refer to Changing
wheels215
– condition198
– damage198
– inflation pressure194
– labels197
– minimum tread depth198
– new wheels and tires199
– pressure monitoring, refer to
Flat Tire Monitor81
– pressure monitoring, refer to
Tire Pressure Monitor
TPM82
– puncture81
– replacing199
– run-flat199
– size197
– storage200
– tread depth198
– wear indicators, refer to
Minimum tread depth198
– wheel/tire combination, refer
to Correct wheels and
tires199
– winter tires200
TMC station, refer to Traffic
bulletins133
Tone
– control140
– middle setting142
Tools, refer to Onboard
vehicle tool kit212

Everything from A to Z
250 Voice, refer to Destination
guidance through voice
instructions132
Voice commands
– short commands229
– telephone178
Voice instructions from
navigation system132
– repeating132
– switching on/off132
– volume132
Voice phone book*179
Volume140
– audio sources140
– fuel tank, refer to
Capacities228
– mobile phone173
– voice instructions132
Volume balance, tone
setting142
W
Warning and indicator
lamps13Warning messages, refer to
Check Control73
Warning triangle219
Washer fluid61
– content of the reservoir61
Washer fluid reservoir61
Water on roads, refer to
Driving through water114
Water penetration208,209
Waveband on the radio143
Wear indicators in tires, refer
to Minimum tread depth198
Weights228
Welcome lamps88
Wheel/tire combination, refer
to Correct wheels and
tires199
Wheelbase, refer to
Dimensions227
Wheels, new199
Wheels and tires194
Width, refer to
Dimensions227
Wind deflector39
Windows36
– convenient operation30
– opening, closing37
– pinch protection system37
Windows, defrosting, refer to
Defrosting windows95
Windows, defrosting and
defogging
– air conditioner95
Windows, indicator on Control
Display16
Windshield
– cleaning61
– defrosting and defogging95
Windshield, defrosting, refer
to Defrosting windows95
Windshield wash60
– filling capacity, reservoir228
– nozzles61
– reservoir for washer fluid61
– washer fluid61
Windshield wiper blades,
changing212
Windshield wipers, refer to
Wiper system60Winter tires200
– storage200
Wiper blade replacement212
Wiper system60
Word-matching principle for
navigation129
Work in the engine
compartment201
Wrench/screwdriver, refer to
Onboard vehicle tool kit212
X
Xenon lamps
– replacing bulbs213
Y
Your individual vehicle
– settings, refer to Personal
Profile28