flat tire BMW Z8 2001 User Guide

101n
IndexDataTechnologyRepairsCar careControlsOverview
Wheel and tire combinations The right choice
Use only wheels and tires
approved by BMW for the corre-
sponding vehicle model, as otherwise
the tires may make contact with the
body as the result of tolerances despite
the same nominal size being used,
resulting in serious accidents. If non-
approved wheels and tires are used,
BMW cannot evaluate their suitability,
and therefore cannot be held liable for
driving safety.<
For wheel and tire specifications
approved by BMW, refer to page 103.
The correct wheel-tire combina-
tion affects different systems that
otherwise will not function properly,
e.g. ABS, DSC and RDW.
For this reason, use only tires of the
same brand and tread pattern on the
vehicle and, for example, restore the
approved wheel-tire combination
following a flat tire as soon as
possible.<
Codes on tires and wheels The code on tires has the following
meaning.
Codes on radial tires:
The speed rating indicates the approved
maximum speed for the tire.
Summer tires:
S = up to 112 mph (180 km/h)
T = up to 118 mph (190 km/h)
H = up to 130 mph (210 km/h)
V = up to 150 mph (240 km/h)
W = up to 167 mph (270 km/h)
Y = up to 186 mph (300 km/h)
ZR = over 150 mph (240 km/h) For example:
Nominal width
in mm
Aspect ratio in X
Radial tire code
Rim diameter in inches
Load rating
(not on ZR tires)
Speed rating
(before R on ZR tires)
245/45 R 18 96 W
Winter tires:
Q M+S = up to 100 mph (160 km/h)
T M+S = up to 118 mph (190 km/h)
H M+S = up to 130 mph (210 km/h)
Codes on light-alloy wheels:
Protect tire valves from dirt by using
screw-on valve stem caps. Dirt in the
valves frequently leads to slow leaks.
Tires with emergency driving character-
istics also possess an additional identi-
fication mark that varies by manufac-
turer, e. g.:
Bridgestone RFT
Dunlop DSST
Goodyear EMT
Michelin ZPStorage Store tires in a cool, dry place,
protecting them against light when-
ever possible. Protect the tires against
contact with oil, grease and fuel. For example:
Rim width
in inches
Code letter for
flange type
Symbol for full-drop
center rim
Rim diameter in inches
Hump on the 2 rim shoulders
8x18EH 2
J

102n
Special features of winter tires Snow chains
*
Choosing the right tireFor winter road driving, BMW recom-
mends winter tires (M+S radial belt
tires). Although all-season M+S tires
provide better winter traction than stan-
dard summer tires with H, V, W and ZR
speed ratings, they generally fail to
provide the same levels of performance
as standard snow tires in winter driving.
In the interests of safe tracking and
steering response, install radial tires
made by the same manufacturer and
with the same tread configuration on all
four wheels if you elect to mount winter
tires.
Use only winter tires with emer-
gency driving characteristics as
there is no spare tire available if you get
a flat tire.
For further information, refer to
page 135.<
Do not exceed specified
maximum speeds
Never exceed the maximum speed
for which winter tires are rated.
Unprofessional attempts by laymen to
service tires can lead to damage and
accidents.
Have this work performed by skilled
professionals only. Your BMW center
will be glad to assist you with both their
expertise and the proper equipment for
your vehicle.<
Tire condition, tire pressureOnce the tread depth on winter tires is
less than 0.16 in (4 mm), they are no
longer suitable for winter road driving,
and in the interest of safety should be
replaced.
Comply with the specified tire inflation
pressures Ð and be sure to have the
wheel and tire assemblies balanced
every time you change the tires.
The use of narrow-link BMW snow
chains is permissible in pairs only on
the rear wheels with winter tires with
tire size 245/45 R 18 96 H. Comply with
all manufacturer's safety precautions
when mounting the chains.
Do not activate the RDW system
while using snow chains.
Malfunction warnings and undetected
losses in pressure are possible when
driving with snow chains.
For further information, refer to
page 67.<

122n
Vehicle storage
If the vehicle is to be stored for
more than three months, ensure
that the following service operations
are carried out first.<
Preparations for storageHave your BMW center perform the
following procedures:
1 Clean and apply a rust proofing agent
or other treatment to the engine,
engine compartment, undercarriage,
axles and major components in accor-
dance with approved repair proce-
dures. Wash the vehicle, clean the
interior and treat painted and
chromed parts. Clean the weather-
stripping around the hood, luggage
compartment and doors
2 Change engine oil and oil filter at
operating temperature. As an addi-
tional corrosion protection measure,
an anticorrosive agent can be added
to the engine in accordance with the
manufacturer's instructions
3 Check the coolant level and concen-
tration and top off if necessary
4 Check the fluid level of the wind-
shield washer fluid reservoir; top off
if necessary
5 Fill the fuel tank completely to
prevent the formation of condensa-
tion
6 Increase the tire inflation pressure to
51 psi (350 kPa).Before parking the vehicle1 Dry the parking brake and footbrake
by brake applications to prevent the
brake discs and drums from
corroding
2 Park the vehicle in a covered, dry,
and well-ventilated area. Place the
transmission in first gear or, if neces-
sary, chock the wheels to prevent the
vehicle from rolling. Do not engage
the parking brake
3 Remove the battery, charge it
completely and store it in a cool (but
frost-free) room
4 Remove the hardtop and store it
separately, refer to page 96
5 Close the convertible top.
During storageRecharge a battery that has been taken
out of the car every six months. If it is
not recharged, it will not be serviceable.
Every time the battery is discharged,
especially over extended periods, its
service life is reduced.Removing the vehicle from
storageRecharge the battery if the "Magic Eye"
turns black, refer to page 136.
Then have Inspection I performed by
your BMW center, including a brake
fluid replacement, if necessary. Refer to
the Service and Warranty Information
Booklet (US models) or the Warranty
and Service Guide Booklet (Canadian
models).

135n
IndexDataTechnologyRepairsCar careControlsOverview
Changing a wheel Run-flat tiresYour BMW Z8 roadster is equipped
with run-flat tires.
The assembly consists of self-support-
ing tires mounted on specially-designed
wheel rims. Special reinforcement
elements support the sidewalls in the
event of pressure loss. Although tire
performance is then restricted, the
vehicle can still be driven on the
deflated tire for a limited distance. Your
vehicle is equipped with a tire pressure
monitor that signals you in case of a flat
tire.
In the event of a flat tire The red indicator lamp on the instru-
ment panel will flash in the event of a
flat tire. In addition, a gong will sound.
Refer to page 67.
Carefully reduce speed to less than
50 mph (80 km/h), avoiding any hard
braking or steering maneuvers while
doing so.
You will still be able to drive approx.
155 miles (250 km) on your run-flat tire,
until you can get to a safe place to park,
a gas station, or to the nearest BMW
center. Under minimum vehicle loading,
it could conceivably last more than
155 miles (250 km).
If you cannot immediately determine
which tire is defective just by looking
at it, then check the tire pressure in all
four tires.Have your BMW center replace
your tires. For safety reasons, do
not have run-flat tires repaired. Your
BMW center has been trained to work
with the run-flat tires and is equipped
with the necessary special tools.<
If necessary, please have your
BMW center switch the tires on
your vehicle from summer to winter
tires, or the reverse.<

148n
Deceleration sensors continuously
monitor the physical forces acting upon
the vehicle. The airbag supplemental
restraint system responds to the
extreme deceleration rates of a high-
intensity frontal impact Ð the kind of
collision in which safety belts alone
might not provide adequate protection Ð
by simultaneously igniting the two gas
generators responsible for activating
the driver and passenger airbags. A
sensor monitors the status of the
passenger seat; its airbag does not
deploy unless the seat is occupied.
In the event of a side collision, only the
side airbags will be triggered if neces-
sary. And only that airbag for that side
of the vehicle where the collision
occurred will be triggered.
390de012
The airbags located under the marked
covers inflate and unfold in a matter of
a few milliseconds. In this process, they
tear through the designed separation
points of the covers or press them out.
Because the inflation process must be
virtually instantaneous, it is necessarily
accompanied by a certain amount of
ignition and inflation noise. The gas
required to inflate the airbags is not
dangerous, and the associated smoke
then dissipates.
The entire process is completed within
fractions of a second.AM, LW and SW broadcast signals
have substantially longer reception
ranges than FM transmissions. This is
because the broadcast signals propa-
gated at ground level in the form of
surface waves are also reflected from
the ionosphere as atmospheric waves.
Frequency-modulation (FM) provides
substantially better sound quality than
the other frequency bands. However,
because FM transmissions rely on line-
of-sight broadcast waves, their effec-
tive reception range is limited.
The limitations inherent to radio recep-
tion in a moving vehicle have been
minimized by a number of innovative
system designs.
Highly sensitive sensors monitor wheel
speed, steering angle, lateral accelera-
360de084
Airbags Radio reception

Everything from A to Z
163n
IndexDataTechnologyRepairsCar careControlsOverview
Controls16
Convertible top41
closing in event of
electrical
malfunction140t
manual operation141t
Coolant111, 157
Coolant temperature
gauge63
Copyright4
Cornering Brake Control
(CBC)21, 89
Curb weight156
Current check indicator20DDashboard16
Data
dimensions155
engine154
technical154
weights156
Daytime-driving lamp69
DBC (Dynamic Brake
Control)90
Deactivating the tilt sensor
alarm system and interior
motion sensor34
Deep water87
Defrosting the
windows60, 75
Difficult steering20, 94Dimensions155
Dipstick109
Disc brakes90
Displacement154
Display lighting69
Displays18
Disposal
engine oil111
used batteries138t
Door keys30
Door warning lamp, bulb
replacement132t
Doors
emergency
actuation32t
mirrors47
remote control33
unlocking and locking32
DOT Quality Grades99
Draft-free ventilation75
Drink holder78, 80
Drive belts158
Driving in winter92
Driving notes87
DSC (Dynamic Stability
Control)22, 65, 149
Dynamic Brake Control
(DBC)90
Dynamic Performance
Control66
Dynamic Stability Control
(DSC)22, 65, 149
EElectric defrosting of
mirrors47
Electric power seat45
Electric power windows40
Electrical equipment
failure138t
Electrical failure
convertible top140t
doors32t
fuel filler door140t
luggage
compartment140t
passenger-side
door141t
Electrical system158
Electronic vehicle
immobilizer31
Emergency operation
convertible top140t
doors32t
fuel filler door140t
luggage
compartment140t
passenger-side
door141t
Engine
coolant111, 157
data154
output154
speed154
starting56
switching off56Engine compartment106
Engine oil109
add109t
consumption109
filling capacity157
filter change157
pressure indicator
lamp20
quality110
specifications110
viscosity110
Engine oil level21
check109
Equipment
options and accessories5
Exit lamps, bulb
replacement132t
Exterior finish117
Exterior mirrors47
FFailure to start144t
Fault in ABS89
Filler cap cover25
Filling capacities157
Filling the washer
reservoir157
First-aid kit24
Fittings, tow starting and
towing144t
Flashlight79
Flat tire135t

Everything from A to ZFog lamp, bulb
replacement131t
Follow-Me-Home
lamps49, 69
Footbrake90
Footwell lamps70
bulb replacement132t
Front seat adjustment45
Frost protection,
radiator111
Fuel26
gauge62
indicator62
quality26
Fuel filler door
manual release after
electrical fault140t
Fuel tank capacity157
Fuel-injection system154
Fuses138GGasoline26
quality26
Glove compartment78
bulb replacement133t
Gross vehicle weight156
HHand lamp79
Handbrake57
Handsfree car phone
system81
Hardtop96
Hazard warning
flashers24t
Hazard warning
triangle24t
Head restraint46
Headlamp covers,
care115t, 129t
Headlamp flasher70
Headlamp washer
system60, 108, 157
Headlamps70
Headlight glare in rearview
mirror48
Heated mirrors47
Heated seats77
Heating and ventilation72
Heating, rapid77
Heavy loads83
Height155
High beams23, 58, 70
Holder for beverage
cans80
Hood release104t, 104
Horn17
Hydraulic system88, 91
IIdentification, tires101
Ignition keys30
Ignition lock55
Imprint4
Incoming air mode74
Indicator lamps20
Inflation pressure26t, 98
monitoring67
INSPECTION63
Instrument cluster18
Instrument panel lighting69
Instruments18
Interaxle tire rotation100
Interface socket for On-
Board-Diagnostics124
Interference
cellular phone94
radio reception94
Interior lamps34, 70
bulb replacement133t
remote control34
Interior motion sensor38
deactivating34
Interior rearview mirror
with automatic
dimmer48, 150
Intermittent mode of wiper
system59
JJump starting143KKey Memory48
Key with remote control30
Keys30LLamps and bulbs129t
Leather care120
Length155
License plate, bulb
replacement131t
Light switch69
Light-alloy wheels103
Lighter82
Loading83
Lock deicer92
Louvers72
Low beam headlamps69
Low traction road
surfaces93
Luggage compartment37
bulb replacement134t
capacity156
remote control35
Luggage compartment
lid37
emergency release37t

Everything from A to ZService Interval
Display63, 114
Shelves78, 79
Side airbags51
Side lamps69
bulb replace-
ment129t
Side marker lamps69
Skid control93
Slippery roads93
Snow chains92, 103
Socket82
for flashlights82
for power supplies82
for vacuum cleaners82
Sound system, refer to the
separate Owner's Manual
Spare key30
Spark plugs158
Speaker81
Specified engine oil110
Speedometer18
Starting56
problems87t, 143
Steel wheels103
Steering94
Steering wheel lock55
Stopping the vehicle56
Storage areas78, 79
Storing your vehicle122
Stroke154
Summer tires101Switching off the engine56
Switching off the interior
motion sensor39t
Switching off the tilt sensor
alarm system39t
Symbols4, 136
TTachometer62
Tail lamps130
bulb replacement130t
Tank capacity157
Technical data154
Technical
modifications6, 123
Telephone81
Temperature display
outside temperature64
Temperature gauge
engine coolant63
Temperature
selection74, 75
Tilt alarm34
Tilt alarm sensor39
Tire codes101
Tire damage98t
Tire inflation
pressure26, 98
Tire pressure monitor67
Tire Pressure Warning
(RDW)67
Tire replacement99, 100Tire rotation100
Tire specifications103
Tire tread98
Tools128t
Torque154
Tow fittings144t
Tow starting144t
Towing the vehicle144t
Track155
Traction Control System
refer to DSC65
Transmission58
Transmitter key30
Tread depth, tires98
Trip odometer62
Trunk lid, refer to luggage
compartment lid37
Turn signal indicator23, 58
Turning radius155
UUniform Tire Quality
Grading100
Unusually high steering
effort20, 94
Use anti-freeze112t
radiator112t
Used batteries,
disposal138t
VVacuum cleaner82
Vehicle battery136, 158
Vehicle care
exterior117
interior119
Vehicle equipment
options and accessories5
Vehicle Identification
Number (VIN)113
Vehicle immobilizer31
Vehicle painting117
Vehicle storage122
Vehicle weight156
Vehicle, starting56
Vehicle, stopping56
Ventilation72
draft-free75
Vinyl upholstery, care119WWarning lamps20
Washer nozzles,
adjusting108t
Washer reservoir,
filling108t
Washing your car115
Water on roadways87
Waxing, paintwork118
Wear indicator in the
tires99
Weights156

So that you will have important
specifications available when you
stop to refuel, we recommend
that you supplement this table
with data which apply to your
vehicle.
Fuel
Engine oil The oil volume between the
two marks on the oil dipstick
corresponds to approx.
1.1 US quarts (1 liter). Designation Premium Unleaded
Gasoline
AKI: minimum 91
QualityTire inflation pressures
Summer Winter
Front Rear Front Rear
2 persons
Refueling
BMW recommends Castrol