2010 BMW Z4 SDRIVE35I ROADSTER air condition

Wheels and tires
194
Wheels and tires
Tire inflation pressures
Information for your safety
It is not merely the tires' service life, but also
driving comfort and, to a great extent, driving
safety that depend on the condition of the tires
and the maintenance of the specified tire
pressure.
Check the tire inflation pressure regularly
and correct it, if necessary: at least twice a
month and before starting long trips. If you fail
to observe this precaution you may be driving
on tires with incorrect tire pressures, a condi-
tion that can not only compromise your vehi-
cle's driving stability, but also lead to tire dam-
age and the risk of an accident. Do not drive
with deflated, i.e., flat tires, except when using
run-flat tires. A flat tire will seriously impair your
vehicle's handling and braking response.
Attempts to drive on a flat tire can lead to loss of
control over the vehicle.<
Checking pressure
Only check tire inflation pressure when the
tires are cold. This means after a maximum of
1.25 miles/2 km driving or when the vehicle has
been parked for at least 2 hours. When tires are
warm, the tire inflation pressure is higher.
After correcting the tire inflation pressure,
reinitialize the Tire Pressure Monitor,
refer to page83, or the Flat Tire Monitor, refer
to page81.<
Inflation pressure specifications
The tables below provide all the correct inflation
pressures for the specified tire sizes at ambient
temperature.
The inflation pressures apply to the tire
sizes approved and tire brands recom-
mended by BMW; a list of these is available
from your BMW center.<
For correct identification of the right tire infla-
tion pressures, observe the following:>Tire sizes for your vehicle
>Load conditions
>Maximum allowable driving speed
Tire inflation pressures for driving up to
100 mph or 160 km/h
For normal driving up to 100 mph or 160 km/h
and to achieve optimum driving comfort, adjust
pressures to the respective tire inflation pres-
sures listed on the following pages in the col-
umns for traveling speeds up to a maximum of
100 mph or 160 km/h.
These tire inflation pressures can also be found
on the driver's side door post when the driver's
door is open.
The maximum permissible speed for
these tire pressures is 100 mph or
160 km/h. Do not exceed this speed; otherwise,
tire damage and accidents could occur.<
Tire inflation pressures for driving
above 100 mph or 160 km/h
In order to drive at maximum speeds in
excess of 100 mph or 160 km/h, adjust
pressures to the respective tire inflation pres-
sures listed on the following pages in the col-
umns for traveling speeds including those
exceeding 100 mph or 160 km/h. Otherwise,
tire damage and accidents could occur.<
Observe all national and local maximum speed
limits; otherwise, violations of the laws could
occur.

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.

Maintenance
206
Maintenance
BMW Maintenance System
The BMW Maintenance System supports the
preservation of the traffic and operating safety
of your BMW. The objective is to optimize
efforts with respect to minimal vehicle mainte-
nance costs.
If and when you come to sell your BMW, a com-
prehensive record of servicing will prove a sig-
nificant benefit.
Condition Based Service CBS
Sensors and special algorithms take the differ-
ent driving conditions of your BMW into
account. Condition Based Service uses this to
determine the current and future service
requirements. By letting you define a service
and maintenance regimen that reflects your
own individual requirements, the system builds
the basis for trouble-free driving.
On the Control Display, you can have the
remaining times or distances for selected main-
tenance tasks and any legally prescribed dates
displayed, refer to page69:
>Engine oil
>Brake pads, separately for the front
and back
>Brake fluid
>Vehicle check
>Legally mandated inspections depending
on local regulations
Service data in the remote control
Your vehicle continuously stores service-
requirement information in the remote control
while you are driving. Your BMW Service Advi-
sor can read out this data from the remote con-
trol unit, and propose an optimized mainte-
nance approach. Whenever you take your car in
for servicing you should therefore hand your
BMW Service Advisor the remote control unit
that you last used.
Make sure that the date is always set cor-
rectly, refer to page72; otherwise, the
effectiveness of Condition Based Service CBS
is not assured.<
Service and Warranty Information
Booklet for US models and Warranty
and Service Guide Booklet for
Canadian models
Please consult your Service and Warranty Infor-
mation Booklet for US models and Warranty
and Service Guide Booklet for Canadian models
for additional information on service require-
ments.
BMW recommends that you have service
and repair operations performed at your
BMW center.
Take the time to ensure that these service pro-
cedures are confirmed by entries in your vehi-
cle's Service and Warranty Information Booklet
for US models and Warranty and Service Guide
Booklet for Canadian models. These entries
verify that your vehicle has received the speci-
fied regular maintenance.<

Giving and receiving assistance
218
Giving and receiving assistance
Emergency Request*
Requirements
>BMW Assist is activated. Activating
BMW Assist, refer to page186.
>Radio readiness is on.
>The BMW Assist system is logged on to a
wireless network.
>The Emergency Request system is
operable.
>Equipment version with full preparation
package mobile phone. This equipment
makes it possible to send an Emergency
Request even if no mobile phone is paired
with the vehicle.
Once your service contract for BMW Assist
expires, the BMW Assist system can be deacti-
vated by a BMW center without you having to
visit a workshop. Once the BMW Assist system
has been deactivated, Emergency Requests
are not possible. The BMW Assist system can
be reactivated by a BMW center after a new
contract has been signed.
Sending an Emergency Request
1.Briefly press the cover flap to open.
2.Press the SOS button until the LED in the
button lights up.
As soon as the voice connection to the BMW
Assist Response Center has been established,
the LED flashes.Once the BMW Assist Response Center has
received your Emergency Request, the
BMW Assist Response Center contacts you
and takes further steps to help you. Even if you
are unable to respond, the BMW Assist
Response Center will be able to initiate further
steps to assist you under certain conditions.
If the circumstances allow this, remain in the
vehicle until the connection has been estab-
lished. You will then be able to provide a
detailed description of the situation.
In a BMW Assist Emergency Request, data for
determining the necessary rescue measures
are transmitted to the BMW Assist Response
Center, e.g., the current position of your vehicle,
if it can be determined.
If the LED is flashing but the BMW Assist
Response Center cannot be heard over the
hands-free system, it is possible that the
hands-free system is malfunctioning. You may
still be heard by the BMW Assist Response
Center, however.
Under certain conditions, an Emergency
Request is sent automatically immediately after
a severe accident. This Automatic Collision
Notification is not affected by the button being
pressed.
For technical reasons, the Emergency
Request service cannot be guaranteed
for the most unfavorable conditions.<
Roadside Assistance
BMW Roadside Assistance is there to assist
you around the clock in the event of a break-
down, including on weekends and public
holidays.
The phone numbers of Roadside Assistance in
your home country can be found in the Contact
brochure.

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 239
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Comfort area, refer to Around
the center console14
Compartment for remote
control, refer to Ignition
lock50
Compass102
Computer65
– displays on Control
Display66
Computer, refer to iDrive16
Concierge service185
Condensation, refer to When
the vehicle is parked114
Condition Based Service
CBS206
Configuring settings, refer to
Personal Profile28
Confirmation signals for
locking/unlocking the
vehicle31
Congestion
– refer to Route, bypassing
sections131
Connecting vacuum cleaner,
refer to Connecting
electrical appliances106
Consumption, refer to
Average consumption66
Consumption display
– average consumption66
Contacts
– creating182
Control Center, refer to
iDrive16
Control Display, refer to
iDrive16
– adjusting brightness76
Controller, refer to iDrive16
controls and displays10
Control unit, refer to iDrive16
Convenient loading30
Convenient operation31
– retractable hardtop30
– windows30
Convertible
– enlarging cargo area38,106
Coolant204
– checking level204
Coolant temperature65Cooling, maximum97
Cooling fluid, refer to
Coolant204
Cooling system, refer to
Coolant204
Copyright2
Corner-illuminating lamps,
refer to Adaptive light
control89
Cornering lamps, refer to
Adaptive light control89
Correct tires199
Country codes DVD153
Courtesy lamps, refer to
Interior lamps
92
Criteria for route130
Cross-hairs in navigation126
Cruise control61
– malfunction63
Cruising range66
Cupholders105
Curb weight, refer to
Weights228
Current playback
– external devices165
– of music collection160
Customer Relations187
D
Dashboard, refer to
Cockpit10
Dashboard, refer to
Instrument cluster12
Dashboard lighting, refer to
Instrument lighting91
Data, technical226
– dimensions227
– engine226
– weights228
Data recorders207
Data transfer188
Date
– date format73
– setting72
Daytime running lights89
DBC Dynamic Brake
Control78DCC, refer to Cruise
control61
Deactivating passenger
airbags86
Deadlocking, refer to
Locking30
Defect
– door lock31
– fuel filler flap192
Defogging windows95
Defrosting windows95
Defrost position, refer to
Defrosting windows95
Destination, entering by town/
city name121
Destination address
– entering121,127
Destination entry via BMW
Assist125
Destination for navigation
– entering by voice127
– entering via map126
– entry121
– home address124
– manual entry121
Destination guidance130
– bypassing a route
section131
– changing specified
route130
– continuing130
– starting130
– voice instructions132
– volume of voice
instructions132
Detour, selecting136
Digital clock64
Digital compass102
Digital radio, refer to HD
Radio144
Dimensions227
Directional indicators, refer to
Turn signals59
Direction instructions, refer to
Voice instructions132
Directory for navigation, refer
to Address book123
Displacement, refer to Engine
data226

Reference 241
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Exhaust system, refer to Hot
exhaust system113
Exterior mirrors45
– adjusting45
– automatic dimming
feature46
– automatic heating46
– folding in and out45
External audio device104
Eyes
– for tow-starting and towing
away220
– for tying down loads116
F
Failure messages, refer to
Check Control73
Failure of an electrical
consumer216
False alarm
– avoiding unintentional
alarm34
– switching off an alarm34
Fastening safety belts, refer to
Safety belts44
Fastest route for
navigation130
Fast forward
– CD changer153
– CD player153
Fault
– parking brake53
Filter
– refer to Microfilter/activated-
charcoal filter for automatic
climate control98
– refer to Microfilter for air
conditioner95
First aid pouch219
Fixture for remote control,
refer to Ignition lock50
Flash when locking/
unlocking31
Flat tire
– run-flat tires199
– Tire Pressure Monitor
TPM82Flat Tire Monitor FTM81
– indicating a flat tire81
– indicator/warning lamp81
– initializing the system81
– snow chains81,200
– system limits81
Flat tires, refer to Tire
condition198
Fluid reservoir, refer to
Washer fluid reservoir61
FM, waveband143
Folding in the mirrors, before
driving into a car wash45
Footbrake, refer to Braking
safely114
Footwell lamps, refer to
Interior lamps92
Forward gear, engaging, refer
to Transmission
positions56
For your own safety5
Free memory capacity, music
collection161
Front airbags85
FTM, refer to Flat Tire
Monitor81
Fuel193
– average consumption66
– gauge65
– high-quality brands193
– quality193
– specifications
193
– tank contents, refer to
Capacities228
Fuel clock, refer to Fuel
gauge65
Fuel display, refer to Fuel
gauge65
Fuel filler flap192
– releasing in the event of
electrical malfunction192
Fuses216
G
Garage door opener, refer to
Integrated universal remote
control100Gasoline
– refer to Average
consumption66
Gasoline, refer to Required
fuel193
Gasoline display, refer to Fuel
gauge65
Gas station
recommendations131
Gear display, refer to Displays
in the instrument cluster56
Gear indicator, automatic
transmission with
Steptronic53
Gears, changing57
Gearshift lever
– automatic transmission with
Steptronic54
– manual transmission53
Gearshifts
– automatic transmission with
Steptronic54
– manual transmission53
General driving notes113
Glove compartment103
GPS navigation, refer to
Navigation system120
Grills, refer to Air vents93
Gross vehicle weight, refer to
Weights228
H
Handbrake, refer to Parking
brake52
Hands-free system14
Hazard warning flashers14
HD Radio144
Head airbags85
Headlamp control,
automatic88
Headlamp flasher59
– indicator lamp11,13
Heated
– mirrors46
– rear window95,98
– seats43