inflation pressure SUBARU IMPREZA WRX STI 2012 Owners Manual

Black plate (135,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
monitoring system (TPMS) is functioning
properly. If there is no problem and all tires
are properly inflated, the light will turn off.
Each tire, including the spare (if provided),
should be checked monthly when cold
and inflated to the inflation pressure
recommended by the vehicle manufac-
turer on the vehicle placard or tire inflation
pressure label. (If your vehicle has tires of
a different size than the size indicated on
the vehicle placard or tire inflation pres-
sure label, you should determine the
proper tire inflation pressure for those
tires.)
As an added safety feature, your vehicle
has been equipped with a tire pressure
monitoring system (TPMS) that illuminates
a low tire pressure telltale when one or
more of your tires is significantly under-
inflated. Accordingly, when the low tire
pressure telltale illuminates, you should
stop and check your tires as soon as
possible, and inflate them to the proper
pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and
can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life,
and may affect the vehicle’ s handling and
stopping ability.
Please note that the TPMS is not a
substitute for proper tire maintenance,
and it is the driver ’s responsibility to maintain correct tire pressure, even if
under-inflation has not reached the level
to trigger illumination of the TPMS low tire
pressure telltale.
Your vehicle has also been equipped with
a TPMS malfunction indicator to indicate
when the system is not operating properly.
The TPMS malfunction indicator is com-
bined with the low tire pressure telltale.
When the system detects a malfunction,
the telltale will flash for approximately one
minute and then remain continuously
illuminated. This sequence will continue
upon subsequent vehicle start-ups as long
as the malfunction exists. When the
malfunction indicator is illuminated, the
system may not be able to detect or signal
low tire pressure as intended. TPMS
malfunctions may occur for a variety of
reasons, including the installation of re-
placement or alternate tires or wheels on
the vehicle that prevent the TPMS from
functioning properly. Always check the
TPMS malfunction telltale after replacing
one or more tires or wheels on your
vehicle to ensure that the replacement or
alternate tires and wheels allow the TPMS
to continue to function properly.
Should the warning light illuminate stea-
dily after blinking for approximately one
minute, have the system inspected by
your nearest SUBARU dealer as soon as
possible.
WARNING
If this light does not illuminate
briefly after the ignition switch is
turned ON or the light illuminates
steadily after blinking for approxi-
mately one minute, you should have
your Tire Pressure Monitoring Sys-
tem checked at a SUBARU dealer as
soon as possible.
If this light illuminates while driving,
never brake suddenly and keep
driving straight ahead while gradu-
ally reducing speed. Then slowly
pull off the road to a safe place.
Otherwise an accident involving
serious vehicle damage and serious
personal injury could occur.
If this light still illuminates while
driving after adjusting the tire pres-
sure, a tire may have significant
damage and a fast leak that causes
the tire to lose air rapidly. If you have
a flat tire, replace it with a spare tire
as soon as possible.
When a spare tire is mounted or a
wheel rim is replaced without the
original pressure sensor/transmitter
being transferred, the Low tire pres-
sure warning light will illuminate
Instruments and controls
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Black plate (136,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
3-18
Instruments and controls
steadily after blinking for approxi-
mately one minute. This indicates
the TPMS is unable to monitor all
four road wheels. Contact your
SUBARU dealer as soon as possible
for tire and sensor replacement and/
or system resetting.
If the light illuminates steadily after
blinking for approximately one min-
ute, promptly contact a SUBARU
dealer to have the system inspected.
CAUTION
The tire pressure monitoring system
is NOT a substitute for manually
checking tire pressure. The tire
pressure should be checked peri-
odically (at least monthly) using a
tire gauge. After any change to tire
pressure(s), the tire pressure mon-
itoring system will not re-check tire
inflation pressures until the vehicle
is first driven more than 20 mph (32
km/h). After adjusting the tire pres-
sures, increase the vehicle speed to
at least 20 mph (32 km/h) to start the
TPMS re-checking of the tire infla-
tion pressures. If the tire pressures
are now above the severe low
pressure threshold, the low tire
pressure warning light should turn off a few minutes later. Therefore, be
sure to install the specified size for
the front and rear tires.
&
ABS warning light
CAUTION
.
If any of the following conditions
occur, we recommend that you
have the ABS system repaired at
the first available opportunity by
your SUBARU dealer.
– The warning light does not
illuminate when the ignition
switch is turned to the “ON ”
position.
– The warning light illuminates
when the ignition switch is
turned to the “ON ”position,
but it does not turn off even
when the vehicle speed ex-
ceeds approximately 8 mph
(12 km/h).
– The warning light illuminates
during driving.
. When the warning light is on (and
the brake system warning light is
off), the ABS function shuts
down. However, the conventional
brake system continues to oper- ate normally.
With a vehicle equipped with an EBD
system, the ABS warning light illuminates
together with the brake system warning
light if the EBD system malfunctions. For
further details of the EBD system mal-
function warning, refer to “Electronic
Brake Force Distribution (EBD) system
warning ”F 3-19.
NOTEIf the warning light behavior is as
described in the following conditions,
the ABS system may be considered
normal.
. The warning light illuminates right
after the engine is started but turns off
immediately, remaining off.
. The warning light remains illumi-
nated after the engine has been started,
but it turns off when the vehicle speed
reaches approximately 8 mph (12
km/h).
. The warning light illuminates during
driving, but it turns off immediately and
remains off.
When driving with an insufficient battery
voltage such as when the engine is jump
started, the ABS warning light may illumi-
nate. This is due to the low battery voltage
and does not indicate a malfunction.

Black plate (282,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
7-32
Starting and operating
Tire pressure monitoring
system (TPMS) (U.S.-spec.
models)The tire pressure monitoring system pro-
vides the driver with a warning message
by sending a signal from a sensor that is
installed in each wheel when tire pressure
is severely low.
The tire pressure monitoring system will
activate only when the vehicle is driven at
speeds above 20 mph (32 km/h). Also,
this system may not react immediately to a
sudden drop in tire pressure (for example,
a blow-out caused by running over a
sharp object).
WARNING
If the low tire pressure warning light
illuminates while driving, never
brake suddenly and keep driving
straight ahead while gradually redu-
cing speed. Then slowly pull off the
road to a safe place. Otherwise an
accident involving serious vehicle
damage and serious personal injury
could occur.
Check the pressure for all four tires
and adjust the pressure to the COLD
tire pressure shown on the tire
placard on the door pillar on the
driver ’s side.
Even when the vehicle is driven a
very short distance, the tires get
warm and their pressures increase
accordingly. Be sure to let the tires
cool thoroughly before adjusting
their pressures to the standard
values shown on the tire placard.
Refer to “Tires and wheels” F11-23.
The tire pressure monitoring system
does not function when the vehicle
is stationary. After adjusting the tire
pressures, increase the vehicle
speed to at least 20 mph (32 km/h)
to start the TPMS re-checking of the
tire inflation pressures. If the tire
pressures are now above the severe low pressure threshold, the low tire
pressure warning light should turn
off a few minutes later.
If this light still illuminates while
driving after adjusting the tire pres-
sure, a tire may have significant
damage and a fast leak that causes
the tire to lose air rapidly. If you have
a flat tire, replace it with a spare tire
as soon as possible.
When a spare tire is mounted or a
wheel rim is replaced without the
original pressure sensor/transmitter
being transferred, the low tire pres-
sure warning light will illuminate
steadily after blinking for approxi-
mately one minute. This indicates
the TPMS is unable to monitor all
four road wheels. Contact your
SUBARU dealer as soon as possible
for tire and sensor replacement and/
or system resetting.
Do not inject any tire liquid or
aerosol tire sealant into the tires,
as this may cause a malfunction of
the tire pressure sensors. If the light
illuminates steadily after blinking for
approximately one minute, promptly
contact a SUBARU dealer to have
the system inspected.

Black plate (309,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
possible because the spare tire is de-
signed only for temporary use.
Check the inflation pressure of the tem-
porary spare tire periodically to keep the
tire ready for use. The correct pressure is
60 psi (420 kPa, 4.2 kg/cm
2).
When using the temporary spare tire, note
the following.
. Do not exceed 50 mph (80 km/h).
. Do not put a tire chain on the temporary
spare tire. Because of the smaller tire size,
a tire chain will not fit properly.
. Do not use two or more temporary
spare tires at the same time.
. Do not drive over obstacles. This tire
has a smaller diameter, so road clearance
is reduced.
1) Tread wear indicator bar
2) Indicator location mark. When the wear indicator appears on
the tread, replace the tire.
. The temporary spare tire must be used
only on a rear wheel. If a front wheel tire
gets punctured, replace the wheel with a
rear wheel and install the temporary spare
tire in place of the removed rear wheel.
Maintenance toolsYour vehicle is equipped with the following
maintenance tools.
. Jack
. Jack handle
. Screwdriver
. Towing hook (eye bolt)
. Wheel nut wrench
. Hex-head wrench (only models with
moonroof)
In case of emergency
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Black plate (395,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
Vehicle identification
1) Vehicle identification number
2) Emission control label
3) Tire inflation pressure label
4) Certification label
5) Vehicle identification number plate
6) Model number label
7) Fuel label
8) Air conditioner label Specifications
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12

Black plate (25,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 2
For U.S.A. ........................................................... 13-2
Tire information .................................................. 13-2
Tire labeling....................................................... 13-2
Recommended tire inflation pressure .................. 13-4
Glossary of tire terminology ............................... 13-5
Tire care –maintenance and safety
practices ........................................................ 13-10
Vehicle load limit –how to determine ................ 13-10 Determining compatibility of tire and vehicle
load capacities .............................................. 13-13
Adverse safety consequences of overloading on handling and stopping and on tires ........... 13-14
Steps for Determining Correct Load Limit ......... 13-14
Uniform tire quality grading standards.......... 13-15
Treadwear....................................................... 13-15
Traction AA, A, B, C ......................................... 13-15
Temperature A, B, C ......................................... 13-15
Reporting safety defects (U.S.A.) ................... 13-16
Consumer information and Reporting safety defects
13

Black plate (399,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
Example:(6) Load Index: A numerical code
which specifies the maximum load
a tire can carry at the speed
indicated by its speed symbol, at
maximum inflation pressure.
For example, “90 ”means 1,323 lbs
(600 kg), “89 ”means 1,278 lbs (580
kg).
WARNING
Load indices apply only to the
tire, not to the vehicle. Putting
a load rated tire on any vehicle
does not mean the vehicle can
be loaded up to the tire ’s rated
load.
(7) Speed Rating: An alphabetical
system describing a tire ’s capability
to travel at established and prede-
termined speeds.
For example, “V ” means 149 mph
(240 km/h)
WARNING
.
Speed ratings apply only to the tire, not to the vehicle.
Putting a speed rated tire on
any vehicle does not mean
the vehicle can be operated
at the tire ’s rated speed.
.
The speed rating is void if
the tires are worn out, da-
maged, repaired, retreaded,
or otherwise altered from
their original condition. If
tires are repaired, re-
treaded, or otherwise al-
tered, they may not be sui-
table for original equipment
tire designed loads and
speeds.
! Tire Identification Number (TIN)Tire Identification Number (TIN) is
marked on the intended outboard
sidewall. The TIN is composed of
four groups. Here is a brief review
of the TIN with a breakdown of its
individual elements.
(1) Manufacturer ’s Identification
Mark
(2) Tire Size
(3) Tire Type Code
(4) Date of Manufacture
The first two figures identify the
week, starting with “01 ”to represent
the first full week of the calendar
year; the second two figures repre-
sent the year. For example, 0101
means the 1st week of 2001.! Other markingsThe following makings are also
placed on the sidewall.!Maximum permissible inflation
pressureThe maximum cold inflation pres-
sure to which this tire may be
inflated. For example, “300 kPa
(44 PSI) MAX. PRESS ”
Consumer information and Reporting safety defects
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13

Black plate (400,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
13-4
Consumer information and Reporting safety defects
! Maximum load ratingThe load rating at the maximum
permissible weight load for this tire.
For example, “MAX. LOAD 580 kg
(1279 LBS) @ 300 kPa (44 PSI)
MAX. PRESS. ”
WARNING
Maximum load rating applies
only to the tire, not to the
vehicle. Putting a load rated
tire on any vehicle does not
mean the vehicle can be
loaded up to the tire ’s rated
load.! Construction typeApplicable construction of this tire.
For example, “TUBELESS STEEL
BELTED RADIAL”! ConstructionThe generic name of each cord
material used in the plies (both
sidewall and tread area) of this tire.
For example, “PLIES: TREAD 2 STEEL + 2 POLYESTER SIDE-
WALL 2 POLYESTER
”
!Uniform Tire Quality Grading
(UTQG)For details, refer to “Uniform tire
quality grading standards ”F 13-15
.
& Recommended tire inflation
pressure! Recommended cold tire infla-
tion pressureFor recommended cold tire inflation
pressure for your vehicle ’s tires,
refer to “Tires ”F 12-9
.
! Vehicle placard
The vehicle placard is affixed to the
driver ’s side B-pillar.Example:The vehicle placard shows original
tire size, recommended cold tire
inflation pressure on each tire at
maximum loaded vehicle weight,
seating capacity and loading infor-
mation.! Adverse safety consequences
of under-inflationDriving at high speeds with exces-
sively low tire pressures can cause
the tires to flex severely and to
rapidly become hot. A sharp in-

Black plate (402,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
13-6
Consumer information and Reporting safety defects
.
Extra load tire
A tire designed to operate at higher
loads and higher inflation pressure
than the corresponding standard
tire..
Groove
The space between two adjacent
tread ribs..
Innerliner
The layer(s) forming the inside sur-
face of a tubeless tire that contains
the inflating medium within the tire..
Innerliner separation
The parting of the innerliner from
cord material in the carcass..
Intended outboard sidewall(1)
The sidewall that contains a
whitewall, bears white lettering
or bears manufacturer, brand,
and/or model name molding that
is higher or deeper than the
same molding on the other side-
wall of the tire, or
(2)
The outward facing sidewall
of an asymmetrical tire that has
a particular side that must al-
ways face outward when mount- ing on a vehicle.
.
Light truck (LT) tire
A tire designated by its manufac-
turer as primarily intended for use
on lightweight trucks or multipur-
pose passenger vehicles..
Load rating
The maximum load that a tire is
rated to carry for a given inflation
pressure..
Maximum inflation pressure
The maximum cold inflation pres-
sure to which a tire may be inflated..
Maximum load rating
The load rating for a tire at the
maximum permissible inflation
pressure for that tire..
Maximum loaded vehicle weight
The sum of:
(a)
Curb weight
(b)
Accessory weight
(c)
Vehicle capacity weight
(d)
Production options weight
.
Maximum permissible inflation
pressure
The maximum cold inflation pres-
sure to which a tire may be inflated.
.
Measuring rim
The rim on which a tire is fitted for
physical dimension requirements..
Normal occupant weight
150 lbs (68 kg) times the number of
occupants specified in the second
column of Table 1 that is appended
to the end of this section..
Occupant distribution
Distribution of occupants in a vehi-
cle as specified in the third column
of Table 1 that is appended to the
end of this section..
Open splice
Any parting at any junction of tread,
sidewall, or innerliner that extends
to cord material..
Outer diameter
The overall diameter of an inflated
new tire..
Overall width
The linear distance between the
exteriors of the sidewalls of an
inflated tire, including elevations
due to labeling, decorations, or
protective bands or ribs.

Black plate (403,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
.
Passenger car tire
A tire intended for use on passen-
ger cars, multipurpose passenger
vehicles, and trucks, that have a
gross vehicle weight rating (GVWR)
of 10,000 lbs (4,535 kg) or less..
Ply
A layer of rubber-coated parallel
cords..
Ply separation
A parting of rubber compound
between adjacent plies..
Pneumatic tire
A mechanical device made of rub-
ber, chemicals, fabric and steel or
other materials, that, when
mounted on an automotive wheel,
provides the traction and contains
the gas or fluid that sustains the
load..
Production options weight
The combined weight of those
installed regular production options
weighing over 5.1 lbs (2.3 kg) in
excess of those standard items
which they replace, not previously
considered in curb weight or acces- sory weight, including heavy duty
brakes, ride levelers, roof rack,
heavy duty battery, and special
trim.
.
Radial ply tire
A pneumatic tire in which the ply
cords that extend to the beads are
laid at substantially 90 degrees to
the centerline of the tread..
Recommended inflation pres-
sure
The cold inflation pressure recom-
mended by a vehicle manufacturer..
Reinforced tire
A tire designed to operate at higher
loads and at higher inflation pres-
sures than the corresponding stan-
dard tire..
Rim
A metal support for a tire or a tire
and tube assembly upon which the
tire beads are seated..
Rim diameter
Nominal diameter of the bead seat..
Rim size designation
Rim diameter and width.
.
Rim type designation
The industry of manufacturer ’s des-
ignation for a rim by style or code..
Rim width
Nominal distance between rim
flanges..
Section width
The linear distance between the
exteriors of the sidewalls of an
inflated tire, excluding elevations
due to labeling, decoration, or
protective bands..
Sidewall
That portion of a tire between the
tread and bead..
Sidewall separation
The parting of the rubber com-
pound from the cord material in
the sidewall..
Test rim
The rim on which a tire is fitted for
testing, and it may be any rim listed
as appropriate for use with that tire..
Tread
That portion of a tire that comes
into contact with the road.
Consumer information and Reporting safety defects
13-7
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