tires BMW 760LI 2008 E66 User Guide

Wheels and tires
200
Wheels and tires
Tire inflation pressure
Information for your safety
The condition of the tires and the maintenance
of the specified tire pressure are crucial not only
to the tire's service life, but also to driving com-
fort and most importantly, driving safety.
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 increases.
Check the tire inflation pressure regularly
and correct it as needed, including the
spare wheel: at least twice a month and before
starting long trips. If you fail to take this precau-
tion, you may be driving on tires with incorrect
tire pressures, a condition that can not only
compromise your vehicle's driving stability, but
also lead to tire damage and the risk of an acci-
dent. Do not drive with deflated, i.e. flat tires,
except 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.<
After correcting the tire inflation pressure,
reinitialize the Flat Tire Monitor, refer to
page90, or reset the Tire Pressure Monitor,
refer to page92.<
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 and tire brands respectively
approved and recommended by BMW; a list of
these is available from your BMW center.<
For correct identification of the right inflation
pressure for your tires, pay attention to the fol-
lowing:>Tire sizes for your vehicle
>Load conditions
>Maximum allowable driving speed
Tire inflation pressures for driving
up to 100 mph/160 km/h
For normal driving up to 100 mph/160 km/h
adjust pressures to the respective tire inflation
pressures listed on the following pages in the
column for traveling speeds up to a max. of
100 mph/160 km/h to achieve optimum driving
comfort.
These pressure specifications can be found on
the door post when you open the driver's door.
The permissible top speed for these tire
inflation pressures is 100 mph/160 km/h.
Do not exceed this speed; otherwise, tire dam-
age and accidents may result.<
Tire inflation pressures for driving
above 100 mph/160 km/h
In order to drive at maximum speeds in
excess of 100 mph/160 km/h, please
consult the relevant table on the following
pages and adjust tire pressures as necessary to
the specified pressures for speeds exceeding
100 mph/150 km/h. Otherwise, tire damage
and accidents could occur.<
Observe all national and local maximum speed
limits; otherwise, violations of the law could
occur.

Mobility
201Reference
At a glance
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Tire inflation pressures for 750i/Li
Tire size Pressure specifications in psi/kPa
Traveling speeds
up to a max. of
100 mph / 160 km/hAll traveling speeds
including those exceeding
100 mph/160 km/h
All pressure specifications in
the table are indicated in psi/
kilopascal with cold tires.
Cold = ambient temperature
245/55 R 17 102 H M+S 32/220 32/220 32/220 33/230 32/220 38/260
245/50 R 18 100 V M+S A/S
245/50 R 18 100 W
245/50 R 18 100 H M+S
245/50 R 18 104 V M+S XL32/220 35/240 32/220 36/250 35/240 42/290
Front: 245/45 R 19 98 W 32/220 - 32/220 - 33/230 -
Rear: 275/40 R 19 101 W - 33/230 - 35/240 - 39/270
Front: 245/45 R 19 98 Y 32/220 - 32/220 - 32/220
Rear: 275/40 R 19 101 Y - 33/230 - 32/220 35/240
Front: 245/40 R 20 95 Y 32/220 - 32/220 - 33/230 -
Rear: 275/35 R 20 98 Y - 36/250 - 35/240 - 39/270
Front: 245/35 ZR 21 96 Y XL 33/230 - 35/240 - 36/250 -
Rear: 285/30 ZR 21 100 Y XL - 39/270 - 36/250 - 42/290
More details on the permissible load and weights can be found on page228.

Wheels and tires
202
Tire inflation pressures for 760i/Li
Tire size Pressure specifications in psi/kPa
Traveling speeds
up to a max. of
100mph / 160km/hAll traveling speeds
including those exceeding
100 mph/160 km/h
All pressure specifications in
the table are indicated in psi/
kilopascal with cold tires.
Cold = ambient temperature
245/50 R 18 100 V M+S A/S
245/50 R 18 100 W
245/50 R 18 100 H M+S
245/50 R 18 104 V M+S XL32/220 33/230 33/230 38/260 35/240 41/280
Front: 245/45 R 19 98 Y 32/220 - 32/220 - 33/230 -
Rear: 275/40 R 19 101 Y - 32/220 - 32/220 - 33/230
Front: 245/40 R 20 95 Y 33/230 - 35/240 - 36/250 -
Rear: 275/35 R 20 98 Y - 35/240 - 35/240 - 38/260
Front: 245/35 ZR 21 96 Y XL 38/260 - 39/270 - 41/280 -
Rear: 285/30 ZR 21 100 Y XL - 38/260 - 39/270 - 41/280
More details on the permissible load and weights can be found on page228.

Mobility
203Reference
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Tire coding
Knowledge of the labeling on the side of the tire
makes it easier to identify and choose the right
tires.
Tire size
Speed rating
Q = up to 105 mph/160 km/h
T = up to 118 mph/190 km/h
H = up to 131 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
Tire Identification Number
Tires with DOT codes meet the guidelines of
the U.S. Department of Transportation.
DOT code:
Tire age
The tire's date of manufacture is indicated on
the sidewall:
DOT...1007 means that the tire was manufac-
tured in the 10th week of 2007.
BMW recommends that you replace all tires –
including the spare – after a maximum of 6 years, even though the tires may have a theo-
retical service life of up to 10 years.
Uniform Tire Quality Grading
Quality grades can be found where applicable
on the tire sidewall between tread shoulder and
maximum section width. For example:
Tread wear 200 Traction AA
Temperature A
DOT Quality Grades
Tread wear
Traction AA A B C
Temperature A B C
All passenger car tires must conform to
Federal Safety Requirements in addition
to these grades.<
Tread wear
The tread wear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified gov-
ernment test course.
For example, a tire graded 150 would wear one
and one-half, 1γ, times as well on the govern-
ment course as a tire graded 100. The relative
performance of tires depends upon the actual
conditions of their use, however, and may devi-
ate significantly from the norm due to variations
in driving habits, service practices and differ-
ences in road characteristics and climate.
Traction
The 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 specified government test sur-
faces 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, cor-
nering, hydroplaning, or peak traction charac-
teristics.< e.g.
Nominal width in mm
Aspect ratio in Ξ
Radial tire code
Rim diameter in inches
Load rating,
not for ZR tires
Speed rating,
before R on ZR tires
245/50 R18100 V
e.g.
Manufacturer code
for tire makes
Tire size and tire design
Tire ageDOT xxxx xxx 1007

Wheels and tires
204
Temperature
The temperature grades are A, B, and C, A
being highest, and represent the tire's resis-
tance 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 page205.
M+S
Winter and all-season tires.
These have better winter properties than sum-
mer tires.
XL
Indicates specially reinforced tires.
Tire condition
Inspect your tires frequently for tread depth,
signs of damage and for foreign objects lodged
in the tread. Check the tread depth.
Minimum tread depth
The tread depth should not fall below 0.12 in/
3 mm, although, for example, European legisla-
tion only specifies a minimum tread depth of
0.063 in/1.6 mm.
At tread depths below 0.12 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.
Winter tires display a noticeable loss in their
ability to cope with cold-weather driving condi-
tions once the tread wears to below 0.16 in/
4 mm. To ensure continued safety, you should
always have such tires replaced.
Wear indicators at the tread-groove base, refer
to arrow, are distributed over the tire's circum-
ference and are marked on the side of the tire
with TWI – Tread Wear Indicator. If the tire tread
has been driven down to the wear indicators, a
tread depth of 0.063 in/1.6 mm has been
reached.
Wheel/tire damage
Please note that low profile tires make wheels,
tires, and suspension parts more susceptible to
road hazards 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. These
kinds of problems may also be signaled by other
changes in vehicle response, such as a strong
tendency to pull to the left or right.
In these cases, reduce speed immedi-
ately and have wheels and tires thor-
oughly checked. Drive carefully to the nearest
BMW center or tire shop that works according
to BMW repair procedures with correspond-

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205Reference
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ingly trained personnel. If necessary, have the
vehicle towed there.
Tire damage can be extremely dangerous for
vehicle occupants and other road users.<
Run-flat tires*
You will recognize run-flat tires by a circular
symbol containing the letters RSC on the side
of the tire.
The run-flat tires consist of special rims and
tires that are self-supporting to a limited
degree. The tire reinforcement ensures that the
tire retains some residual safety in the event of
pressure drop and driving remains possible to a
restricted degree.
To continue driving with a damaged tire:
>When equipped with Flat Tire Monitor, refer
to Indication of a flat tire on page91.
>When equipped with Tire Pressure Monitor,
refer to Low tire pressure message on
page93.
New wheels and tires
Only have new wheels and tires mounted
by a BMW center or a tire specialist that
works in accordance with BMW guidelines and
uses appropriately trained personnel. If this
work is not carried out properly, there is a dan-
ger of subsequent damage and related safety
hazards.<
Retreaded tires
BMW does not recommend the use of
retreaded tires; otherwise, driving safety
may be reduced. Possible variations in the
design and the age – which could be substantial
– of the tire casing structures can lead to unusu-
ally rapid wear.<
The right wheels and tires
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 than the
approved units – these differences could lead to
body contact, and with it, the risk of severe acci-
dents. If non-approved wheels and tires are
used, BMW cannot evaluate their suitability,
and therefore cannot be held liable for driving
safety.<
You can ask your BMW center for the right
wheel and tire combination.
The correct wheel and tire combination affects
various systems whose function would other-
wise be impaired, such as ABS or DSC.
To maintain good handling and vehicle
response, use only tires of a single tread config-
uration from a single manufacturer. After a flat
tire, always remember to have the original
wheel and tire combination remounted on the
vehicle as soon as possible.
Wheels with electronics for
TPM Tire Pressure Monitor*
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 flat tire, refer to page91. Your BMW center
will be glad to advise you.

Wheels and tires
206
Recommended tire sizes and brands
BMW recommends particular tire brands for
each tire size. You will recognize them by the
clearly visible BMW identification on the tire
sidewall.
With proper use, these tires meet the highest
standards for safety and handling characteris-
tics.
Run-flat tires
When installing new tires or when changing
from summer tires to winter tires or vice versa,
for your own safety, use run-flat tires. No spare
wheel is provided in the event of a flat. Your
BMW center will be glad to advise you.
For safety reasons, BMW recommends
that you not have damaged run-flat tires
repaired; they should be replaced.<
Special characteristics of winter tires
BMW recommends winter tires for use in cold
winter driving conditions. Although so-called
all-season M+S tires provide better winter trac-
tion than summer tires, they generally fail to
provide the same levels of cold-weather perfor-
mance as winter tires.
Observing speed ratings
Never exceed the maximum speed for
which the winter tires are rated.<
Storage
Always store wheels or 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 pres-
sure indicated on the side wall of the tire.
Wheel changing between axles
BMW does not recommend changing the front
wheels to the rear or vice versa as this can dam-
age handling characteristics.
Snow chains*
Only certain fine-link snow chains are tested,
classified as road-safe, and recommended by
BMW. Consult your BMW center for more infor-
mation. Use on winter tires is only permissible in
pairs on the rear wheels. Follow the manufac-
turer's instructions when installing snow
chains. Do not exceed 30 mph/50 km/h with the
chains mounted.
Do not initialize the Flat Tire Monitor after
mounting snow chains. When you are
driving with snow chains, it can be beneficial to
activate DTC briefly, refer to page88.<

Mobility
217Reference
At a glance
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2.Guide the jack head into the rectangular
recess of the jacking point when cranking
up the jack, refer to section of illustration.
3.Jack the vehicle up until the wheel you are
changing is raised from the ground.
Mounting a wheel
1.Unscrew the lug bolts and remove the
wheel.
2.Remove accumulations of mud or dirt from
the mounting surfaces of the wheel and
hub. Clean the lug bolts.
3.Position the new wheel or spare tire on the
hub and screw in at least two bolts diago-
nally.
When you mount wheels other than Genu-
ine BMW light-alloy wheels, different lug
bolts may also be required.
4.Screw in the remaining lug bolts. Tighten all
the bolts securely in a diagonal pattern.
5.Lower the vehicle and remove the jack from
beneath the vehicle.
After mounting
1.Tighten the lug bolts in a diagonal pattern.
To ensure safety, always have the
lug bolts checked with a calibrated
torque wrench as soon as possible to
ensure that they are tightened to the speci-
fied torque. The tightening torque is
100lbft/140Nm.<
2.Reverse the removal sequence when stor-
ing the wheel and tools in the vehicle.3.Check and correct the tire inflation pressure
at the earliest opportunity.
Use valve stem seal caps to protect
valve stems from dirt and contamina-
tion. Dirt in valve stems is a frequent source
of gradual air loss.<
4.Reinitialize the Flat Tire Monitor, refer to
page90, or reset the Tire Pressure Monitor,
refer to page92.
5.Replace the damaged tire as soon as possi-
ble and have the new wheel/tire balanced.
Driving with spare tire
On certain wheel-tire combinations, the
size of the spare tire differs from that of
the rest of the tires. The spare tire is fully capa-
ble of running in all load and speed ranges.
However, to recreate the original conditions,
the tire should be replaced as soon as possi-
ble.<
Vehicle battery
Maintenance
The battery is 100 % maintenance-free, i.e., the
electrolyte will last for the life of the battery
when the vehicle is operated in a temperate cli-
mate. Your BMW center will be happy to advise
you on all questions concerning the battery.
Charging battery
Charge the battery in the vehicle only via the
terminals in the engine compartment and with
the engine off. Connections, refer to Jump
starting on page220.

Everything from A to Z
232
Everything from A to Z
Index
A
"ABC...", navigation131
ABS Antilock Brake
System87
ACC, refer to Active cruise
control69
"ACCEPT",
navigation140,148
Accessories, refer to Your
individual vehicle5
Accident, refer to
– Initiating an emergency
call219
– Roadside
Assistance190,219
Activated-charcoal filter107
Activating
– BMW Assist193
– High Definition Radio162
Active cruise control69
– indicator lamp71
– malfunction72
– radar sensor72
– sensor, refer to
Malfunction72
Active head restraints,
front47
Active seat50
Active seat ventilation50
Adapter for spare key31
Adaptive brake lamp, refer to
Brake force display94
Adaptive Drive
– refer to Dynamic Drive89
– refer to EDC Electronic
Damper Control89
Adaptive Head Light100
Address
– deleting140
– displaying141
– storing139
– storing current position147"Address book",
navigation139
Adjusting cooling action of
rear climate control108
Adjusting interior
temperature105
Adjusting tone in audio mode,
refer to Tone control153
Adjusting volume153
– ring tone of telephone179
– voice command system25
– voice instructions146
Airbags95
– safe sitting position43
Air conditioning103
– in rear108
– in the rear108
– while parked109
Air distribution
– automatic104
– manual106
Airing, refer to Ventilation107
Air jets, refer to
Ventilation107
Air pressure, refer to Tire
inflation pressure200
Air recirculation, refer to
Recirculated-air mode105
Air vents, refer to
Ventilation107
Air volume
– automatic climate
control106
– rear climate control108
AKI, refer to Fuel
specifications199
Alarm system37
– avoiding unintentional
alarms38
All around the steering
wheel10
All-season tires, refer to
Winter tires206Altering route, refer to
Changing route146
Alternate route, refer to
Changing route146
"AM", radio156
AM, refer to Radio156
"ANGLE", DVD changer173
Antifreeze
– coolant210
– washer fluid66
Antilock Brake System
ABS87
Anti-theft system
– refer to Alarm system37
– refer to Central locking
system32
Approved engine oils209
Armrest, refer to Center
armrest
– front113
– rear114
"Arrow display",
navigation145
"AS ADDRESS",
navigation139,147
Ashtray
– front115
– rear116
Assist, refer to
BMW Assist189
Assistance getting in and
out52
– backrest width44
Assistance systems, refer to
Driving stability control
systems87
Assistance window20
AUC Automatic recirculated-
air control
105

Reference 235
At a glance
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Changes, technical, refer to
For your own safety5
Changing scale, map view in
navigation145
Changing settings on Control
Display84
Changing time display84
Changing units of measure on
Control Display84
Changing wheels215
– run-flat tires205
"Channels", radio160
Check Control80
– "CHECK"81
– CHECK button81
Child's seats, refer to
Installing child restraint
systems54
Child restraint fixing system
LATCH55
Child restraint systems54
Child-safety lock56
Chrome parts, refer to Caring
for your vehicle brochure
Chrome-plated parts, care,
refer to Caring for your
vehicle brochure
Cigarette lighter116
"City / Postal Code",
navigation133
Cleaning, vehicle, refer to
Caring for your vehicle
brochure
Cleaning headlamps, tank
capacity, refer to Wiper fluid
filler neck66
Cleaning windshield65
"Climate"
– activating activation time for
parked car ventilation110
– preselecting activation time
for parked car
ventilation109
– rear climate control108
– rear refrigerator117
– switching parked car
ventilation on and off
directly109Climate comfort
windshield126
Clock75
– 12/24-hour mode84
– also refer to Assistance
window21
– display format84
– setting84
"Clock", settings84
Closing
– from inside34
– from outside32
Clothes hooks114
Cockpit10
Cold start, refer to Starting
engine57
"Color", DVD changer172
Combined instrument, refer to
Info Display12
"Comfort", EDC Electronic
Damper Control
90
Comfort Access38
– before driving into a car
wash39
– changing battery39
Comfort features14
Comfort program, EDC
Electronic Damper
Control90
Comfort seat44
– in rear45
"Communication", phone184
Compact Disc
– refer to CD changer165
– refer to CD player163
Compartments, refer to
Storage compartments113
Compressed audio files,
CD changer166
Computer76
– displays on Control
Display77
– units of measure and display
format84
"Concierge", BMW Assist192
Condensation, refer to When
vehicle is parked123Condition Based Service
CBS211
Connecting car vacuum
cleaner, refer to Power
socket116
Consumption, refer to
Average fuel
consumption77
Consumption statistics, refer
to Average fuel
consumption77
"Continue route guidance?",
navigation144
"Contrast"
– BMW Night Vision98
– DVD changer172
Control Center, refer to
iDrive16
Control Display
– rear seat screen21
– refer to iDrive16
– setting brightness85
Controller
– programmable button52
– rear seat screen21
– refer to iDrive16
Controls and displays10,14
Coolant210
– level210
– temperature76
Cooler, refer to Rear
refrigerator117
Cooling
– maximum106,108
– refer to AUTO program
104
– refer to Rear climate
control108
– refer to Rear refrigerator117
– refer to Switching cooling
function on and off
manually107
Copyright2
Cornering Brake Control
CBC87
Cradle for mobile phone, refer
to Using snap-in
adapter178