flat tire BMW M3 COUPE 2002 E46 User Guide

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OverviewControlsMaintenanceRepairsDataIndex
Information for your safetyThe factory-approved radial tires are
matched to the vehicle and have been
selected to provide optimum safety and
driving comfort on your vehicle.
It is not merely the tire's service life, but
also driving comfort and Ð above all else
Ð driving safety that depend on the
condition of the tires and the mainte-
nance of the specified tire pressure.
Incorrect inflation pressures are a
frequent cause of tire problems
and tire damage. Tire pressure also has
a major effect on your BMW's handling
response. Check tire inflation pressures
on a regular basis (refer to page 25), at
least every two weeks and before
beginning a longer trip. Failure to
observe these precautions can result in
incorrect tire pressures, which cause
instable handling response as well as
tire damage, and can ultimately lead to
an accident.<
Tire tread Ð tire damageInspect your tires frequently for tread
wear, signs of damage and for foreign
objects lodged in the tread. Check the
tread pattern depth.
Tread depth should not be allowed to go
below 0.12 in (3 mm), even though the
legally specified minimum tread depth is
only 0.063 in (1.6 mm). Tread wear indi-
cators (arrow) are embedded in the base
of the tire's tread. Their locations are
indicated by the legend "TWI" Ð Tread
Wear Indicator Ð at various points on the
tire's shoulder. When the tread reaches a
depth of 0.063 in (1.6 mm), these indica-
tors appear to signal that the tires have
worn to the minimum legal level. Below
0.12 in (3 mm) tread depth, there is an
increased risk of aquaplaning, even at
relatively moderate speeds and with only
small amounts of water on the road.
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 leads to over-
heating and causes damage inside the
tires. You could have a blowout as a
result.
Unusual vibrations encountered during
normal vehicle operation can indicate
tire failure or some other vehicle defect.
The type of problem can be caused by
contact with curbs, etc. This is also true
for irregularities in the vehicle's
handling characteristics, such as a
pronounced tendency to pull to the left
or right. Should this occur, respond by
immediately reducing your speed.
Proceed carefully to the nearest BMW
center or professional tire center, or
have the vehicle towed in to have it and
its wheels and tires inspected.
Tire damage (up to and including blow-
outs) can endanger the lives of both the
vehicle occupants and other road
users.<
Tire inflation pressure Tire condition

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DOT Quality GradesTreadwear
Traction AA A B C
Temperature A B C
All passenger vehicle tires must
conform to Federal Safety
Requirements in addition to these
grades.< Tread wearThe tread wear grade is a comparative
rating based on the wear rate of the tire
when tested under controlled condi-
tions on a specified government test
course.
For example, a tire graded 150 would
wear one and one-half (1 g) times as
well on the government course as a tire
graded 100. The relative performance
of tires depends upon the actual condi-
tions of their use, however, and may
depart significantly from the norm due
to variations in driving habits, service
practices and differences in road char-
acteristics and climate.
TractionThe traction grades, from highest to
lowest, are AA, A, B, and C.
Those grades represent the tire's ability
to stop on wet pavement as measured
under controlled conditions on speci-
fied government test surfaces of
asphalt and concrete. A tire marked C
may have poor traction performance.
The traction grade assigned to
this tire is based on straight-
ahead braking traction tests, and does
not include acceleration, cornering,
hydroplaning, or peak traction charac-
teristics.< TemperatureThe 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 condi-
tions 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 vehicle tires must meet
under the Federal Motor Vehicle 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 separately or
in combination, can cause heat buildup
and possible tire failure.< Uniform Tire Quality Grading Quality grades can be found where
applicable on the tire sidewall between
tread shoulder and maximum section
width. For example:
Treadwear 200 Traction AA
Temperature A
Tire replacement

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OverviewControlsMaintenanceRepairsDataIndex
Tire replacement Wheel and tire combinationsTire ageBMW recommends the replacement of
all tires after 6 years at the latest, even
if a tire life of 10 years is possible.
The date on which the tire was manu-
factured is indicated by the code on the
sidewall:
DOT ... 4 101 means that the tire was
produced in the 41st week of the year
2001. Following wheel/tire changesFollowing wheel and/or tire replace-
ment you will need to reinitialize both
the Flat Tire Monitor and the sequential
M gearbox
* SMG II, refer to pages 65,
78.
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.<
BMW tests certain tire brands for each
tire size, classifies them as road-safe
and approves them. Consult your BMW
center for more information. Observe
any country-specific regulations, e.g.
on making a corresponding entry in the
vehicle documents.
The correct wheel and tire combi-
nation affects different systems
such as ABS, DSC, Flat Tire Monitor.
The function of these systems is
impaired if improper wheel and tire
combinations are used.
For this reason, use only tires of the
same brand and tread pattern on the
vehicle and, for example, restore the
approved wheel and tire combination
following a flat tire as soon as possible.<
The use of rims and lug bolts that
do not meet the specifications of
the original factory-installed equipment
will affect the safe operation of your
vehicle and may cause an accident and
personal injury.
Never mix tires of different design, such
as steel-belted radials with radial bias-
belted or bias-ply tires, etc. Mixing tire
types will adversely affect roadholding
and can lead to loss of vehicle
control.<
Storage Store tires in a cool, dry place,
protecting them against light whenever
possible. Protect the tires against
contact with oil, grease and fuel.

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Special characteristics of winter tires Snow chainsChoosing the right tireBMW recommends winter tires (M+S
radial tires) for operation under adverse
winter driving conditions. So-called all-
season tires with the M+S identification
mark do indeed possess better winter
traction than summer tires that have the
H, V, W, Y and ZR speed ratings, they
generally fail to provide the same levels
of performance as snow tires.
In the interest of safe tracking and
steering response, install winter tires
made by the same manufacturer having
the same tread configuration on all four
wheels. 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. Any BMW center
has the required technical knowledge
and the proper equipment and will be
happy to assist you.<
Tire condition, tire pressureOnce winter tires wear to a tread depth
of less than 0.16 in (4 mm), their perfor-
mance under winter driving conditions
deteriorates noticeably. Worn tires
should therefore be replaced for safety
considerations.
Inflate tires to specified pressure and
have the wheels balanced every time
the tires or wheels have been replaced.Use narrow-link BMW snow chains
* on
winter tires in pairs only and only on the
rear wheels. Comply with all manufac-
turer's safety precautions when
mounting the chains. Do not exceed a
maximum 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 65.
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 77.<

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Repairing a flat tire
Precautions in case of a flat tire:
Stop the vehicle as far as possible
from passing traffic; switch on the
hazard warning flashers.
Turn the steering wheel to the straight-
ahead position and engage the steering
lock. Shift into 1st or reverse and
engage the parking brake.
All passengers should be outside the
vehicle and well away from your imme-
diate working area (behind a guardrail,
for instance).
If a warning triangle or portable hazard
warning lamp is available, set it up on
the roadside at an appropriate distance
from the rear of the vehicle.
Comply with all safety guidelines and
regulations.<
M Mobility systemWith the BMW M3, you will find an M
Mobility system for fixing flat tires. With
the aid of this system, you can apply a
liquid sealant to the inside of the tire,
thereby sealing off the damaged area,
and then continue driving.
The M Mobility system makes trans-
porting a spare wheel superfluous,
thereby reducing the amount of weight
you have to carry around. Using the M Mobility systemTo repair a flat tire using the M Mobility
system, proceed as follows:
>Prepare the M Mobility system for
use, refer to the next column
>This is part of the M Mobility system,
refer to page 127
>Filling with sealant, refer to page 127
>Distributing sealant, refer to
page 128
>Inflating tire to correct pressure, refer
to page 129.
Preparing the M Mobility system
for useThe M Mobility System is located in the
luggage compartment under the floor
panel:
1. Lift up the floor panel
2. Loosen the M Mobility system from
its storage location.
Before you use the M Mobility
system, read the warnings and
danger notices on the device care-
fully.<
If possible, leave the foreign object in
the tire.
Pull off the sticker 5 (refer to the second
column on the right) for the speed limit
and apply it to the steering wheel.

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Repairing a flat tire
Please keep in mind that the fluids
bottle in the system's sealant
container has to be changed every
3 years by your BMW center, if the unit
has not been used.<
This is part of the M Mobility
system1 On/Off switch
2 Connection hose with manometer for
connecting the compressor with the
sealant container or to connect the
compressor to the wheel
3 Manometer for indicating the tire
pressure
4 Connector hose from the sealant
container to the wheel
5 Sticker for maximum speed
6 Plug and cable for the cigarette
lighter socket
7 Protective gloves (not shown).
Filling with sealant1. Take the round cover off and hose 4
out. Unscrew the valve stem dust
cap from the defective wheel and
screw the hose to the valve. Keep
the dust cap in a safe place.

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Repairing a flat tire2. Flip open the cover and pull on the
enclosed protective gloves. Take out
hose 2 with the manometer and
screw it to the terminal for the
sealant container as shown in the
illustration
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
passenger compartment (refer to
page 93)
4. Make sure that the screw on the rear
of manometer 3 is tightened down.
Turn on the M Mobility system (Posi-
tion 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 sealant 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 1.2 miles
(2 km), so that the liquid sealant distrib-
utes evenly throughout the inside of the
tire.
Do not exceed a maximum speed
of 40 mph (60 km/h). If possible,
keep the vehicle speed above 10 mph
(20 km/h). Stop in a suitable spot.<

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Repairing a flat tire Inflating tire to correct pressure1. Take the hose with the manometer
out and screw it onto the valve.
Take the plug out and plug it into the
cigarette lighter socket in the
passenger compartment
2. Reset the air pressure to 29 psi
(200 kilopascal), and:
>Increase tire pressure: turn on the
M Mobility system (Position I). Turn
the unit off while you check the
current setting for the tire pressure
>Decrease tire pressure: turn the
screw on the back of the mano-
meter, a valve located there will
open
Even if the tire fails to hold the
pressure, you should still carry out
Step 3 before proceeding to drive the
vehicle again, refer to "Distributing
sealant" for more information. Then
repeat Steps 1 through 3.
The use of the M Mobility system may
be ineffective if the damaged area in
the tire is larger than approx. 0.16 in
(4 mm). Please consult the nearest
BMW center if the tire cannot be
temporarily repaired with the M Mobility
system.<
3. Unscrew the hose from the valve
and stow the M Mobility system in
the luggage compartment. Screw
the dust cap onto the valve again.
Do not exceed the maximum
speed limit described below,
otherwise it could lead to accidents.<
After the flat tire has been fixed and you
start driving again, do not exceed a
maximum speed of 45 mph (80 km/h).
You will find corresponding
instructions for using the
M Mobility system on the device.
Replace the defective tire as soon as
possible and have the new wheel
balanced. Reinitialize the Flat Tire
Monitor, and refer to page 78 for further
information. Have the M Mobility
system refilled. Contact your BMW
center for this.<
Protect valve stems against dirt using
screw-on dust caps. Dirty valve stems
frequently lead to slow pressure loss.

Everything from A to Z
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OverviewControlsMaintenanceRepairsDataIndex
Caring for headlamp covers,
refer to the "Caring for your
vehicle" manual
Caring for your vehicle's
paintwork, refer to the
"Caring for your vehicle"
manual
CBC (Cornering Brake
Control)101
warning lamp18
Cellular phone92
refer also to the separate
Owner's Manual
Center (high-mount) brake
lamp125
Center armrest91
Central locking system28
key33
Check Control72
Checking
engine coolant112t
engine oil level110t
tire inflation
pressures24t
Child seat security54
Child-restraint systems52
Cigarette lighter93
Clean the headlamps67 Clean the windshield67
Clock72
also refer to the "Radio
Owner's Manual"
Clothes hooks93
Cockpit14
Coin box91
Combination switch65
Compression136
Computer72
refer also to the "Onboard
Computer Owner's
Manual"
Configuring individual
settings with Vehicle and
Key Memory55
Connecting car vacuum
cleaner93
Consumption74
Consumption display71
Control elements14
Coolant112
Coolant system,
capacity139
Coolant temperature
gauge71
Copyright4 Cornering Brake Control
(CBC)101
warning lamp18
Cover, sun blinds89
Cruise control68
Cruising range74
Curb weight138
D
Data
dimensions137
engine136
technical136
weights138
Daytime driving lamps80
DBC (Dynamic Brake
Control)77
Deep water101
Defrostable rear window88
Defroster, rear window84
Defrosting windows87
Dimensions137
Dipstick, engine oil110
Disc brakes102
Displacement136
Display lighting81
Distance warning75
Divided rear backrest94
Door key28 Doors
electrical
malfunction29t
manual operation29t
operating manually29
remote control30
unlocking and
locking29, 30
Draft-free ventilation85, 88
Driving notes
aquaplaning101
brakes101
DSC (Dynamic Stability
Control)76
indicator lamp19
Dynamic Brake Control
(DBC)77
Dynamic Stability Control
(DSC)76
indicator lamp19
E
Electric power windows39
Electrical malfunction
doors29t
fuel filler door22t
luggage compartment
lid34
sliding/tilt sunroof41t

Everything from A to ZEmergency release of
luggage compartment lid
from luggage
compartment's interior36
Engine
displacement136
starting56t
torque136
Engine compartment
essentials108
Engine coolant112
add112t
checking112t
Engine cooling system,
capacity139
Engine data136
Engine oil
adding110t
capacity139
consumption110
for low ambient
temperatures111
level, checking110t
level, indicator lamp17
pressure17
pressure, indicator
lamp17
quality111 specifications111
thermometer70
viscosity111
Engine speed136
Entry to the rear45
Exterior mirrors48
F
Failure messages72
Filling capacities139
Filling the washer
reservoir109t
First-aid kit22
Flat tire103
repairing126
Flat Tire Monitor77
indicator lamp17, 19
Fog lamps82
bulb replacement123t
Folding rear backrest94
Follow me home lamps80
Footbrake102
Footwell lamps82
Front seat adjusting42
Frost protection,
radiator112
Fuel24
Fuel consumption74 Fuel consumption
display71
Fuel filler door22
electrical
malfunction22t
manual operation22t
Fuel gauge71
Fuel quality24
Fuel reserve indicator
lamp71
Fuel tank capacity139
Fuel tank gauge71
G
Gasoline24
Gasoline gauge71
Gearshift lever58
Glove compartment90
Gross vehicle weight138 H
Handbrake58
Hands-free system92
Hazard warning triangle22
Head restraints44
adjusting44 Headlamp cleaning
system108
Headlamp control80
Headlamp flasher81
Headlamp washer
system139
Heated seats47
Heavy loads96
Height137
HiFi system90
High beams65, 81
indicator lamps20
Holder for beverages91
Hood release107t
Horn14
I
Ice warning73
Identification, tires105
Ignition key28
Ignition key positions56
Ignition lock56
Imprint4
Indicator lamps17
Individual settings with
Vehicle and Key
Memory55
Inflation pressure,
tires24, 103