2005 BMW X3 3.0I tire size

Wheels and tires
82
Wheels and tires
Tire inflation pressure
Information for your safety
It is not merely the tire's service life, but also
driving comfort and – to a great extent – driving
safety that depend on the condition of the tires
and the maintenance of the specified tire pres-
sure.
Checking pressure
Only check tire inflation pressure when the tires
are cold, i.e. 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 if necessary, including com-
pact wheel: at least every two weeks and before
beginning a longer trip. If you fail to observe this
precaution 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
accident. Do not drive with a depressurized, i.e.
flat tire. A flat tire will seriously impair your vehi-
cle's handling and braking response. Attempts
to drive on a flat tire can lead to loss of control
over the vehicle.<
After correcting the inflation pressure(s),
always reinitialize the Flat Tire Monitor,
refer to page50.<
Inflation pressures for factory-installed
tires
The inflation pressures for your factory-
installed tires can be found on the door jamb
when you open the driver's door.
Inflation pressures for other tire sizes
The table below provides all the correct inflation
pressures for the specified tire sizes at ambient
temperature.
For correct identification of the right tire
inflation pressure for your tires, observe
the specifications for the corresponding tire
sizes.<
Tire size
The inflation pressures apply to the tire sizes
approved and tire brands recommended by
BMW; a list of these is available from your
BMW Sports Activity Vehicle Center.

Reference
At a glance
Controls
Driving tips
Mobility
83
X3 2.5i/3.0i
Tire sizePressure specifications in psi/kPa
All pressure specifications in the table
are indicated in psi/
kilopascal with cold tires,
cold = ambient temperature
235/55 R 17 99 H M+S
235/55 R 17 99 Q, T, H M+S29/200 32/220 32/220 38/260
215/60 R 17 96 H M+S
215/60 R 17 96 Q, T, H M+S
235/50 R 18 97 H M+S
235/50 R 18 97 V32/220 35/240 35/240 41/280
Front: 235/50 R 18 97 V
Rear: 255/45 R 18 99 V32/220
––
32/22035/240
––
38/260
Front: 235/45 R 19 95W
Rear: 255/40 R 19 96W32/220
––
35/24035/240
––
41/280
Compact wheel: T 135/90 R 17 104 M 61/420
More details on the permitted load and weights can be found on page112

Wheels and tires
84
Tire identification marks
Knowledge of the labeling on the side of the tire
makes it easier to identify and choose the right
tires.
Tire size
Speed code letter
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 Transport.
DOT code:
Tire age
The tire's date of manufacture is indicated on
the sidewall:
DOT ... 3004 indicates that a tire was manufac-
tured in week 30 of the year 2004.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 govern-
ment course as a tire graded 100. The relative
performance of tires depends upon the actual
conditions of their use, however, and may
depart significantly from the norm due to varia-
tions in driving habits, service practices and dif-
ferences 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. 235/50 R 18 97 V
Nominal width in mm
Cross-sectional
relationship in Ξ
Radial tire code
Rim diameter in inches
Load rating,
not for ZR tires
Speed rating,
before R on ZR tires
e.g. DOT xxxx xxx 3603
Manufacturer code
for tire make
Tire size and tire design
Tire age

Wheels and tires
86
New wheels and tires
Have new wheels and tires installed only
by your BMW Sports Activity Vehicle
Center or tire shop that works according to
BMW repair procedures with correspondingly
trained personnel. If this work is not carried out
properly, there is a danger of subsequent dam-
age and related safety hazards.<
Retreaded tires
BMW does not recommend the use of
retreaded tires, as otherwise driving
safety may be reduced. The causes for this
include the possibly different tire casing struc-
tures 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 ask your BMW Sports Activity Vehicle
Center for the correct wheel-and-tire combina-
tion.
The correct wheel-and-tire combination 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. After a flat
tire, always remember to have the specified
wheel-and-tire combination remounted on the
vehicle as soon as possible.
Recommended tire sizes and brands
BMW tests certain tire brands for each tire size,
classifies them as road-safe and approves
them. These are available at a specialized
dealer, preferably your BMW Sports Activity
Vehicle Center. Observe any country-specific
regulations, e.g. on making a corresponding
entry in the vehicle documents.
The factory-mounted tires have been specially
selected to provide optimized performance
when installed on your vehicle; if properly cared
for, they will provide a combination of safety and
excellent ride comfort.
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.
Observing speed ratings
Never exceed the maximum speed for
which the winter tires are rated. Unpro-
fessional attempts by laymen to service tires
can lead to damage and accidents. Have this
work performed by skilled professionals only.
The technicians at your BMW Sports Activity
V e h i c l e C e n t e r w i l l b e g l a d t o a s s i s t y o u w i t h t h e
required professional knowledge and special-
ized equipment.<
Storage
Store wheels or tires in a cool, dry place, pro-
tecting them against light whenever possible.
Protect the tires against contact with oil, grease
and fuel. Do not exceed the maximum tire infla-
tion pressure indicated on the side wall of the
tire.

Reference
At a glance
Controls
Driving tips
Mobility
101
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 jack and remove it 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
101lbft/140Nm.<
2.Stow the defective wheel in the cargo area.
3.Check and correct the tire inflation pressure
at the earliest opportunity.
Protect valve stems and valve stem
seal caps against dirt and contamina-
tion. Dirt in valve stems is a frequent source
of gradual air loss.<
4.Reinitialize the Flat Tire Monitor, refer to
page49.
Do not initialize the system when driv-
ing with the compact wheel.<
5.Replace the damaged tire with a new one as
soon as possible and have the new wheel
balanced.
Driving with compact wheel
Drive reservedly and do not exceed a
speed of 50 mph/80 km/h. Do not deacti-
vate DSC, as otherwise unstable driving condi-
tions may result.<
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. You should re-equip with
wheels and tires of the original size as quickly as
possible.<
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 Sports Activity Vehicle Center
will be happy to consult you on all questions
concerning the battery.
Warning lamp
The warning lamp lights up. The bat-
tery is no longer being charged. The
alternator V-belt is defective or there is
a malfunction in the charge current circuit of the
alternator. Have the system checked immedi-
ately.
Do not continue driving if the V-belt is
defective. The engine could be damaged
due to overheating.
Moreover, an increased amount of force is
required for steering if there is a sharp drop in
the onboard supply voltage.<
Charging battery
Charge the battery in the vehicle only when the
engine is not running. Use the connections pro-
vided in the engine compartment. For connec-
tions, refer to Jump starting on page104.
Disposal
Have old batteries disposed of following
replacement at your BMW Sports Activity
Vehicle Center or bring them to a collection
point. Maintain the battery in an upright position
for transport and storage. Always secure the
battery to prevent it from tipping over during
transport.<

Reference
At a glance
Controls
Driving tips
Mobility
121
Steering wheel with
buttons12
Steptronic36
Storage compartments64,65
Storage package65
Storage package nets65
Storage space, refer to Cargo
area67
Storing desired speed, refer to
Cruise control40
Storing seat position, refer to
Seat and mirror memory26
Storing tires86
Straps, refer to Cargo
loading74
Supply reservoirs, washer
systems90
Switches, refer to Cockpit10
Switching off engine35
Symbols4
T
Table of contents3
Tachometer42
Tailgate19
– closing19
– emergency operation19
– emergency operation, refer
to Manual unlocking19
– opening, remote control17
– opening from outside19
– remote control17
– unlocking manually19
Tailgate lamp, replacing
bulbs98
Tail lamps98
– indicator lamp, defective
lamp53
– replacing bulbs98
Tank capacity112
Technical data110
Technical modifications6
Telephone, refer to separate
Owner's Manual
Temperature
– air conditioner57
– automatic climate control60Temperature, tires85
Temperature display
– ice warning44
– outside temperature44
– setting units44
Temperature gage42
Tempomat, refer to Cruise
control40
The right wheels and tires86
Thigh support
adjustment25,26
Three-point safety belt27
Tightening torque of the lug
bolts, refer to After
mounting101
Tilt alarm sensor
– remote control17
– switching off17
Tilt function, passenger-side
mirror29
Tire inflation pressures82
Tires
– age84
– breaking-in72
– changing86
– changing, refer to Wheel
changes99
– condition85
– damage85
– DOT Quality Grades84
– flat99
– inflation pressure82
– inflation pressure table83
– size, refer to The right
wheels and tires86
– storage86
– temperature85
– traction84
– tread85
– tread wear84
– tread wear indicator, refer to
Tire tread85
– Uniform Tire Quality
Grading84
– winter tires86
Tools, refer to Onboard tool
kit95Torque
– engine110
– lug bolts101
Tow bar105
Tow fitting105
Towing105
– with automatic
transmission105
Towing eye105
Towing the vehicle105
Tow rope106
Tow sockets for tow
fitting105
Tow-starting105
Track width, refer to
Dimensions111
Traction84
Traction aid, refer to DSC47
Traction control, refer to DSC
Dynamic Stability
Control47
Transmission
– automatic transmission with
Steptronic36
– manual transmission36
Transmission locking
mechanism, refer to
PParking37
Transmission malfunction,
refer to Malfunction38
Transporting children
safely31
Transport securing device,
refer to Securing cargo75
Tread depth, refer to Tire
tread85
Tread wear84
Tread wear indicator in tire,
refer to Tire tread85
Trip-distance counter, refer to
Trip odometer42
Trip odometer42
Trunk19
– capacity112
– opening from outside19
– refer to Cargo area67
Trunk lid, refer to Tailgate19
Turning circle, refer to
Dimensions111