2003 BMW M3 CONVERTIBLE inflation pressure

115 Wheels and tires
Tire inflation pressureInformation for your safetyThe factory-approved tires are matched
to your vehicle and have been selected
to provide optimum safety and driving
comfort when used properly.
It is not merely the tire's service life, but
also driving comfort and – above all else
– driving safety that depend on the con-
dition of the tires and the maintenance
of the specified tire pressure.
Incorrect tire inflation pressure is
a frequent cause of tire damage. It
also significantly influences the road-
holding ability of your BMW. Check tire
inflation pressures on a regular basis,
refer to page 25, at least every two
weeks and before beginning a longer
trip. Incorrect tire pressure can other-
wise lead to driving instability, tire dam-
age and accidents.<
Tire conditionTire tread – tire damageInspect your tires frequently for tread
wear, signs of damage and for foreign
objects lodged in the tread. Check the
tread depth.
Tread depth should not be allowed to
go below 1/8 in / 3 mm, even though
the legally specified minimum tread
depth is only 1/16 in / 1.6 mm.
Below 1/8 in / 3 mm tread depth, there
is a great risk of hydroplaning, even at
relatively moderate speeds and with
only small amounts of water on the
road. Tread wear indicators in the
tread-groove base – see arrow – are
distributed around the wheel circumfer-
ence and are labeled on the tire side-
wall with TWI – Tread Wear Indicator. At
a tread depth of 1/16 in / 1.6 mm, the
indicators signal that the legally permis-
sible wear limit has been reached.
Do not drive on a deflated – flat –
tire. A flat tire greatly impairs
steering and braking response, and can
lead to complete loss of control over
the vehicle.
Avoid overloading the vehicle so that
the permitted load on the tires is not
exceeded. Overloading can lead to
overheating and internal tire damage.
You could have a blowout as a result.
Unusual vibrations encountered during
normal vehicle operation can indicate
tire failure or some other vehicle defect.
This type of problem can be caused by
contact with curbs, etc. This is also true
for irregularities in the vehicle's han-
dling characteristics, such as a pro-
nounced tendency to pull to the left or
right. Should this occur, respond by
immediately reducing your speed. Pro-
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119
Do not exceed specified
maximum speeds
Never exceed the maximum
speed for which the 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 pressureAt tread depth below approx. 3/16 in /
4 mm, their performance under winter
driving conditions deteriorates notice-
ably. Worn tires should therefore be
replaced for safety considerations.
Comply with the specified tire inflation
pressures – and be sure to have the
wheel and tire assembly balanced
every time you change a tire or wheel.
Snow chains*Only certain snow chains have been
tested by BMW and determined and
approved as roadworthy. Consult your
BMW center for more information.
BMW recommends using only these
approved fine-link snow chains. Use
them in pairs on winter tires, but only on
both rear wheels.
Comply with all manufacturer's safety
precautions when mounting the chains.
Do not exceed a speed of 30 mph /
50 km/h with snow chains.
After mounting or removing snow
chains, always reinitialize the sequential
M gearbox SMG II, refer to page 89.
It is not possible to mount snow
chains on tires with 18- and 19-
inch wheels.
Deactivate the Flat Tire Monitor when
using snow chains. Malfunction warn-
ings and undetected losses in pressure
are a possibility when driving with snow
chains.
For additional information, refer to
page 88.<
Winter tires
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141
Filling with sealant1. Take off the round cover and take out
hose 4. Unscrew the valve dust cap
from the defective wheel and screw
the hose to the valve. Keep the dust
cap in a safe place
2. Flip open the cover and pull out the
enclosed protective gloves. Take out
hose 2 with the manometer and
screw it to the terminal for the seal-
ant container as shown in the illustra-
tion
3. Make sure that the system has been
switched off, position 0.
Take out plug 6 and insert it into the
cigarette lighter socket in the pas-
senger compartment, refer to
page 103
4. Make sure that the screw on the rear
of the pressure gauge 3 is tightened
down. Turn on the M Mobility sys-
tem, position I, refer to illustration,
and allow minutes to elapse, to let
the sealant flow in. It does not matter
afterward, what the tire's inflation
pressure is
5. Turn the system off.
Disconnect the connector hose from
the sealant container and the wheel
valve. Stow the M Mobility system in
the luggage compartment.Distributing the sealantRight afterward, drive at least
1 1/4 miles/2 km, so that the liquid
sealant distributes evenly throughout
the inside of the tire.
Repairing a flat tire
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Everything from A to ZEngine oil pressure
warning lamp 18
Engine speed 150
Entering the rear 51
Exterior mirrors 55
Eyelet, towing 146
F
False alarm, avoiding 39
Fault displays 82
First-aid kit 23
Flat tire 115
repairing 139
Flat Tire Monitor 88
indicator lamp 18, 19
Fog lamps 94
Fold down convertible top
compartment panel 37
Follow me home lamps 92
Footbrake 112
Footbrake, refer to Driving
notes 111
Footwell lamps 94
Front airbags 57
Front fog lamps 94
indicator lamp 20
Front seat adjustment 49
Frost protection,
radiator 126
Fuel 25
Fuel consumption 85
display 81Fuel filler door 24
release following an elec-
trical malfunction 24
Fuel gauge 81
Fuel specifications 25
Fuel tank capacity 153
Fuel tank display 81
Fuel tank gauge 81
Fuel-injection system 150
Fully automatic convertible
top 41
operation 41
Fuses 144
replacing 144
G
Gasoline 25
Gasoline gauge 81
Gearbox, sequential 71
Gearshift lever 70
Glove compartment 101
Grills 96
Gross vehicle weight 152
H
Hands-free system 102
Hardtop 113
Hazard warning flashers 14
Hazard warning triangle 23
Head restraints 50
Headlamp 92Headlamp cleaning system
122, 124, 153
Headlamp control 92
Headlamp flasher 76, 93
Heated mirror 55
Heated seats 54
Heavy loads 106
High beams 76, 93
indicator lamps 21
Holder for beverages 102
Hood release 120
Horn 14
Hydroplaning 111, 115
I
Ice warning 84
Ignition key 30
positions 66
Ignition lock 66
Imprint 4
Indicator lamps 18
Individual settings, Vehicle
Memory, Key Memory 65
Inflation pressure 25, 115
INSPECTION 82
Instrument cluster 16
Instrument lighting 93
Instrument panel 14, 16
Interface socket for onboard
diagnostics (OBD) 130
Interior lamps 32, 94
remote control 32Interior motion sensor 38
remote control 32
switching off 32, 39
Interior rearview mirror
automatic dimming
feature 56
Interior temperature
adjusting 98
Intermittent mode 77
J
Jump-starting 145
K
Key Memory 65
Keys 30
L
Lamp replacement 135
Lamps
daytime driving lamps 92
fog lamps 94
footwell lamps 94
headlamp flasher 76, 93
high beams 93
instrument lighting 93
interior lamps 94
low beams 92
parking lamps 92
reading lamps 94
standing lamps 93
Lashing fittings 107
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Everything from A to ZReading lamps
front 94
rear 95
Rear lamps 137
Rear window defroster 99
Rear-entry assist 51
Rearview mirror 55
Recirculated-air mode 99
Refueling 24
Remote control 31
Remote key 30
Replacement key 30, 31
Reporting safety defects 6
Reserve indicator lamp 81
Restraint system 59
Reverse 70
Rims 118
Rollover protection
system 63
indicator lamp 19
lowering 63
Roof load capacity 152
Roof-mounted luggage
rack 107
S
Safe seating position 48
Safety belts 52
seat-integrated belt sys-
tem (SGS) 51
Seat
rear-entry assist 51Seat adjustment 48, 49
lumbar support 49, 50
power seats 49
Seat heating 54
Seat memory 53
Securing cargo 106
Securing child-restraint sys-
tem 61
Securing devices 107
Sequential M gearbox
SMG II 71
indicator lamp 19, 75
Service and Warranty Infor-
mation Booklet 128
SERVICE ENGINE SOON
warning lamp 19
Service interval display
82, 128
Set clock 83
Side airbags 57
Side turn signals
bulb replacement 136
Size 151
Ski bag 104
SMG gearbox 71
Snow chains 119
Socket 103
Spare key 30
Speedometer 16
Sport mode 91
Standing lamps 93
bulb replacement 135Starting problems 67
Starting the engine 67
Steering wheel lock 66
Steering wheel with multi-
function buttons 22
Steering wheel, adjusting 55
Storage compartments 101
Stroke 150
Summer tires 118
Surface ice warning 84
Switching off the engine 69
Symbols used 4
T
Tachometer 16, 80
Tail lamp assembly
replacing bulb 137
Tail lamps 137
replacing bulb 137
Tank capacity 153
Technical data 150
Technical modifications 5
Telephone hookup 102
Telephone, refer to the sep-
arate Owner's Manual
Temperature adjustment 98
Temperature display
engine coolant 81
ice warning 84
interior temperature 98
outside temperature 84
Temperature gauge 80Temperature layering 99
Thigh support area, adjust-
ing 49
Third brake lamp 138
Tilt alarm
deactivate 32, 39
Tilt alarm sensor
remote control 32
Time 83
Tire code 118
Tire damage 115
Tire inflation pressure
25, 115
checking 25
Tire pressure monitor
(TPM) 88
Tire replacement 116
Tire tread 115
Tools 134
Torque 150
Towing eyelet 146
Towing the vehicle 146
Track 151
Transmission 70
Transporting children
safely 59
Tread depth, tires 115
Tread wear indicator 115
Trip odometer 80
Trunk, see Luggage com-
partment 35, 152
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Refueling
To ensure that you always have conve-
nient access to all essential information
when you stop for fuel, we recommend
that you take the time to fill out the
adjoining chart by entering the data that
apply to your vehicle. Consult the index
for individual specifications.
FuelPlease enter your preferred fuel here.Engine oilThe oil quantity between the two marks
on the dipstick is approx.
1.4 US quarts/1.3 liters.Tire inflation pressureDesignation
Quality
Summer tires Winter tires
front rear front rear
Up to 2 persons
4 persons plus luggage
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