2010 BMW 550I SEDAN tires

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Tire age
The manufacturing date of tires is contained in
the tire coding: DOT … 1009 means that the
tire was manufactured in week 10 of 2009.
BMW recommends that you replace all tires
after 6 years at most, even if some tires may last
for 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 government course as a tire graded
100. The relative performance of tires depends
upon the actual conditions of their use, how-
ever, and may depart significantly from the
norm due to variations in driving habits, service
practices and differences in road characteris-
tics and climate.
Traction
The traction grades, from highest to lowest, are
AA, A, B, and C.
These grades represent the tire's ability to stop
on wet pavement, as measured under con-
trolled conditions on specified 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, cor-
nering, hydroplaning, or peak traction charac-
teristics.<
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 page208.
M+S
Winter and all-season tires.
These have better winter properties than sum-
mer tires. For instance
Manufacturer code
for tire make
Tire size and tire design
Tire age
DOT xxxx xxx 1009

Wheels and tires
208
XL
Indicates 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 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.
When winter tires wear down past a tread depth
of 0.16 in/4 mm, they become perceptibly less
suitable for winter conditions. For the sake of
safety, new tires should be installed.
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 cause wheels,
tires and suspension parts to be more suscep-
tible to road hazards and consequential dam-
ages.
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. 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 dangerous to vehicle
occupants and other road users.<
Run-flat tires*
You will recognize run-flat tires by the circular
symbol containing the letters RSC on the side
of the tire.
Run-flat tires consist of partially self-contained
tires and special rims. The sidewall reinforce-
ment 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:
>With Flat Tire Monitor, refer to Indication of
a flat tire, page89
>With Tire Pressure Monitor, refer to Notifi-
cation of low tire inflation pressure, page91
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

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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 bal-
anced.<
Retreaded tires
BMW recommends that you do not use
retreaded tires, since driving safety may
be impaired. The causes for this include the
possibly different tire casing structures and the
often wide variations in their age, which can
result in a limited service life.<
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 inquire about the right wheel/tire com-
bination at your BMW center.
The correct wheel/tire combination also affects
various systems whose function would other-
wise be impaired, e.g., ABS, DSC or xDrive.
To maintain good handling and vehicle
response, use only tires of a single tread config-
uration from a single manufacturer. Following
tire damage, 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 converting from
summer to winter tires or vice versa, only use
wheels with TPM electronics, otherwise the
Tire Pressure Monitor cannot detect a flat tire,
refer to page90. Your BMW center will be
happy to advise you on this subject.
Recommended tire brands
Certain tire makes are recommended by BMW
depending on the tire size. You can recognize
these from the clearly visible BMW marking on
the tire sidewall.
When used properly, these tires comply with
the most demanding standards for safety and
vehicle response.
Run-flat tires
When mounting new tires, or changing from
summer to winter tires or vice versa, use run-flat
tires for your own safety. In addition, no spare
tire is available in case of a flat tire. Your BMW
center will be glad to advise you.
Special characteristics of winter tires
BMW recommends winter tires for use in cold
winter driving conditions. Although all-season
M+S tires provide better winter traction than
summer tires, they generally fail to provide the
same levels of cold-weather performance as
winter tires.
Paying attention to speed
Always observe the maximum permissi-
ble speed for the winter tires, otherwise
tire damage may occur, which can result in acci-
dents.<
Storage
Store wheels and 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 pressure indicated on the side wall of
the tire.

Wheels and tires
210
Rotating wheels between axles
BMW does not recommend moving the front
wheels to the rear or vice versa, as otherwise
the handling characteristics may be impaired.
With tires of different makes and types
* such a
change is not permissible.
Snow chains*
BMW only tests certain fine-link snow chains,
classifies them as road-safe and recommends
them. Consult your BMW center for more infor-
mation.
Use is only permissible in pairs on the rear
wheels.
Observe the manufacturer's instructions when
mounting snow chains. Do not exceed a speed
of 30 mph/50 km/h with the chains mounted.
After mounting snow chains, do not ini-
tialize the Flat Tire Monitor, otherwise
incorrect displays can occur.
When driving with snow chains, it may be prac-
tical to briefly activate DTC, refer to page85.<

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What you will need
To avoid rattling noises later on, note the posi-
tions of the tools before removing them, then
return them to their initial positions after com-
pleting work.
1Chock
*
2Vehicle jack*
3Lug wrench*
The tools are located in the mount under the
floor mat or floor panel flap.
1.Lift up floor mat or floor panel flap and cover
located beneath it.
2.Take out the required tools.
3.After using the tools, return them to the
storage space.
With run-flat tires, no tools are provided
for wheel changes. They can be pur-
chased as accessories at your BMW center.<
Sports Wagon: removing and installing
floor panel flap of storage area
1.Unhook the luggage compartment roller
cover at the rear.
2.Raise the floor panel flap.
3.Unhook the two catch straps at the top.4.Unlock the gas spring strut, refer to arrow,
and remove.
5.Fold over the floor panel flap toward the
front to release it and remove.
6.Open the front floor panel flap.
7.Swing up the spare tire cover and hook the
hooks into the upper frame of the tailgate
opening.
8.Take out the cross support upward.
When installing the floor panel flap, proceed in
the reverse order and press down the hinge
covers.

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3.Check and correct the tire inflation pressure
at the earliest opportunity.
Protect valve stems with valve stem
seal caps against dirt and contamina-
tion. Dirt in valve stems is a frequent source
of gradual air loss.<
4.Initialize the Flat Tire Monitor, refer to
page89, or reset the Tire Pressure Monitor,
refer to page90.
5.Replace the damaged tire as soon as possi-
ble and have the new wheel/tire balanced.
Driving with compact wheel
Drive reservedly and do not exceed a speed of
50 mph/80 km/h.
The driving characteristics change, for example
reduced track stability on braking, extended
braking distance, and altered self-steering
characteristics in the limit range. In conjunction
with winter tires, these characteristics are more
pronounced.
Only one compact wheel may be
mounted. Restore the wheels and tires to
their original size as quickly as possible. Failure
to do so is a safety risk.<
Vehicle battery
Battery care
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 glad to advise in
all matters concerning the battery.
Charging battery
Only charge the battery in the vehicle via the
terminals in the engine compartment with the
engine switched off. Connections, refer to
Jump starting on page232.
Disposal
Have old batteries disposed of by your
BMW center or bring them to a recycling
center. Maintain the battery in an upright posi-tion for transport and storage. Always restrain
the battery to prevent it from tipping over during
transport.<
Power failure
Following a temporary power failure, e.g., due to
a discharged battery, the use of some equip-
ment will be restricted, requiring its reinitializa-
tion. In the same way, individual settings are lost
and must be updated again:
>Seat, mirror and steering wheel memory
The positions must be stored again, refer to
page46.
>Time and date
Must be updated again, refer to page78.
>Radio
In some cases, radio stations may have to
be stored again, refer to page156.
>Navigation system
You must wait until the system becomes
functional again, refer to page132.
>Glass roof, electric
It may only be possible to raise the glass
roof. The system must be initialized, refer to
page40.
>Panorama glass roof
It may only be possible to raise the glass
roof. The system must be reinitialized, refer
to page41.
>Active steering
The system automatically initializes itself
briefly during a trip. The system is deacti-
vated during this time, refer to page92.
>xDrive
The system automatically initializes itself
during a trip. Indicator lamps light up during
this time. If the lamps do not disappear dur-
ing the current trip, have the system
checked.
>Power windows
The pinch prevention system for the power
windows must be reinitialized, refer to
page38.
Talk to your BMW center before placing
the stored vehicle back in service.<

Everything from A to Z
250
Everything from A to Z
Index
A
ABS Antilock Brake
System85
– indicator lamp87
ACC, refer to Active cruise
control66
Accessories6
Accident, refer to Emergency
request231
Acoustic signal, refer to Check
Control79
Activated-charcoal filter for
automatic climate
control108
Activation times of parked car
ventilation, preselecting109
Active backrest width,
adjusting45
Active cruise control66
– indicator lamp70
– radar sensors70
– selecting distance68
– warning lamps70
Active front head restraints47
Active seat50
Active seat ventilation50
Active steering92
– warning lamp93
Adapter for spare key26
Adaptive brake assistant85
Adaptive brake lamps, refer to
Brake force display93
Adaptive Light Control101
Additional connection of
music player in mobile
phone172
Additives
– coolant214
– engine oil, refer to Approved
engine oils213
Address for navigation
– entering133Adjusting interior
temperature106
Adjusting the tone during
audio operation, refer to
Tone control152
Adjusting thigh support44
Airbags93
– indicator/warning lamp95
– indicator lamp for front
passenger airbags94
– sitting safely43
Air distribution
– automatic106
– manual107
Airing, refer to Ventilation108
Air recirculation
– AUC Automatic
recirculated-air control107
– recirculated-air mode107
Air recirculation, refer to
Recirculated-air mode107
Air supply, automatic climate
control105
Air volume107
AKI, refer to Fuel
specifications201
Alarm system35
– avoiding unintentional
alarms36
– interior motion sensor36
– switching off alarm35
– switching off tilt alarm
sensor and interior motion
sensor36
– tilt alarm sensor36
Albums of music
collection169
Alloy wheels218
All-season tires, refer to
Winter tires209
All-wheel drive, refer to
xDrive86Alterations, technical, refer to
For your own safety5
Altering stretch of road143
Antenna for mobile phone178
Antifreeze
– coolant214
– washer fluid65
Anti-theft alarm system, refer
to Alarm system35
Anti-theft system, refer to
Central lokking system27
Approved axle loads, refer to
Weights241
Approved engine oils213
Approved gross vehicle
weight, refer to Weights241
Armrest, refer to Center
armrest
– rear116
Around the center console14
Around the steering wheel10
Arrival time
– refer to Computer76
Ashtray
– front114
– rear115
Assistance systems, refer to
Driving stability control
systems85
AUC Automatic recirculated-
air control107
Audio152
– controls152
– switching on/off152
– tone control152
– volume152
Audio device, external113

Everything from A to Z
256 Exterior mirrors50
– adjusting50
– automatic dimming
feature52
– automatic heating51
– folding in and out51
– tilting down passenger-side
exterior mirror51
External audio device113
External devices
– random sequence174
Eye for tow-starting and
towing, refer to Tow
fitting233
F
Failure messages, refer to
Check Control79
False alarm
– refer to Avoiding
unintentional alarms36
– refer to Switching off
alarm35
Fastening safety belts, refer to
Safety belts48
– warning lamp48
Fastest route for
navigation142
Fast forward
– CD changer162
– CD player162
Filler neck for washer fluid65
Filter, refer to Microfilter/
activated-charcoal filter108
First aid, refer to First aid
kit232
First-aid kit232
Flashing
– during locking/unlocking,
refer to Setting confirmation
signals29
– triple turn signal
activation63Flat tire
– changing wheels226
– compact wheel228
– Flat Tire Monitor88,89
– refer to Tire condition208
– run-flat tires89,91
– TPM Tire Pressure
Monitor90
– warning lamp89,91
Flat Tire Monitor88
– false alarms88
– initializing system89
– snow chains210
– system limits88
– warning lamp89
Fluid reservoir, refer to Filler
neck for washer fluid65
FM, waveband155
Fog lamps104
– indicator lamp104
Folding rear backrest116
– Sports Wagon117
Folding rear backrest, Sports
Wagon117
Folding rear seat backrest116
Footbrake, refer to Braking
safely126
Footwell lamps, refer to
Interior lamps104
For your own safety5
4-wheel drive system, refer to
xDrive
86
Free memory capacity, music
collection170
Freeway, refer to Route
criteria142
Front airbags93
Front armrest, refer to Center
armrest, front112
Front passenger airbags
– deactivating94
Front seat adjustment44
FTM, refer to Flat Tire
Monitor88Fuel201
– average consumption75
– display75
– high-quality brands201
– quality201
– refer to Average fuel
consumption75
– specifications201
– tank contents, refer to
Capacities242
Fuel clock, refer to Fuel
gauge75
Fuel consumption display
– computer, average fuel
consumption75
Fuel display, refer to Fuel
gauge75
Fuel-efficient driving
– refer to Energy control75
– refer to Saving fuel124
Fuel filler flap200
– releasing in the event of
electrical malfunction200
Fuses230
G
Garage door opener, refer to
Integrated universal remote
control110
Gasoline, refer to Required
fuel201
Gasoline display, refer to Fuel
gauge75
Gas station
recommendations143
Gearshift lever
– manual transmission59
General driving
notes124,125
Glass sunroof, electric39
– Convenient opening and
closing from outside30
– Convenient opening and
closing with Comfort
Access37
– moving manually40
– remote control28