2012 SUBARU IMPREZA WRX STI tires

Black plate (358,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
11-28
Maintenance and service
NOTEThe suspension system is designed to
hold each wheel at a certain alignment
(relative to the other wheels and to the
road) for optimum straight-line stability
and cornering performance.& Wear indicators1) New tread
2) Worn tread
3) Tread wear indicatorEach tire incorporates a tread wear
indicator, which becomes visible when
the depth of the tread grooves decreases
to 0.063 in (1.6 mm). A tire must be
replaced when the tread wear indicator
appears as a solid band across the tread.
WARNING
When a tire ’s tread wear indicator
becomes visible, the tire is worn
beyond the acceptable limit and
must be replaced immediately. With
a tire in this condition, driving at
high speeds in wet weather can
cause the vehicle to hydroplane.
The resulting loss of vehicle control
can lead to an accident.NOTEFor safety, inspect tire tread regularly
and replace the tires before their tread
wear indicators become visible.
& Tire rotation direction markExample of tire rotation direction mark
1) FrontIf the tire has the rotation direction
specification, the tire rotation direction
mark is placed on its sidewall.
When you install a tire that has the tire
rotation direction mark, install the tire with
the direction mark facing forward.

Black plate (359,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
& Tire rotationVehicles equipped with 4 non-unidirec-
tional tires
1) FrontVehicles equipped with unidirectional tires
1) Front
Tire wear varies from wheel to wheel. To
maximize the life of each tire and ensure
that the tires wear uniformly, it is best to
rotate the tires every 7,500 miles (12,000
km). Move the tires to the positions shown
in the illustration each time they are
rotated.
Replace any damaged or unevenly worn
tires at the time of rotation. After tire
rotation, adjust the tires pressures and
make sure the wheel nuts are correctly
tightened.
After driving approximately 600 miles
(1,000 km), check the wheel nuts again
and retighten any nut that has become
loose.&Tire replacementThe wheels and tires are important and
integral parts of your vehicle ’s design;
they cannot be changed arbitrarily. The
tires fitted as standard equipment are
optimally matched to the characteristics
of the vehicle and were selected to give
the best possible combination of running
performance, ride comfort, and service
life. It is essential for every tire to have a
size and construction matching those
shown on the tire placard and to have a
speed symbol and load index matching
those shown on the tire placard. Using tires of a non-specified size detracts
from controllability, ride comfort, braking
performance, speedometer accuracy and
odometer accuracy. It also creates incor-
rect body-to-tire clearances and inappro-
priately changes the vehicle’
s ground
clearance.
All four tires must be the same in terms of
manufacturer, brand (tread pattern), con-
struction, and size. You are advised to
replace the tires with new ones that are
identical to those fitted as standard equip-
ment.
For safe vehicle operation, SUBARU
recommends replacing all four tires at
the same time.
WARNING
. When replacing a tire, you must
use a tire that is of the same size,
circumference, construction,
brand (tread pattern), speed sym-
bol and load index as the original
tires listed on the tire placard.
Using tires of other sizes, cir-
cumferences or constructions
may result in severe mechanical
damage to the drive train of your
vehicle and may affect ride,
handling, braking, speedometer/
odometer calibration, and clear-
Maintenance and service
11-29
– CONTINUED –
11

Black plate (360,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
11-30
Maintenance and service
ance between the body and tires.
It also may be dangerous and
lead to loss of vehicle control.
. You must install four tires that are
of the same size, circumference,
construction, manufacturer,
brand (tread pattern), degree of
wear, speed symbol and load
index. Mixing tires of different
types, sizes or degrees of wear
can result in damage to the
vehicle’ s power train. Use of
different types or sizes of tires
can also dangerously reduce
controllability and braking per-
formance and can lead to an
accident.
. Use only radial tires. Do not use
radial tires together with belted
bias tires and/or bias-ply tires.
Doing so can dangerously re-
duce controllability, resulting in
an accident.
& Wheel replacementWhen replacing wheels due, for example,
to damage, make sure the replacement
wheels match the specifications of the
wheels that are fitted as standard equip-
ment. Replacement wheels are available from SUBARU dealers.
WARNING
Use only those wheels that are
specified for your vehicle. Wheels
not meeting specifications could
interfere with brake caliper opera-
tion and may cause the tires to rub
against the wheel well housing dur-
ing turns. The resulting loss of
vehicle control could lead to an
accident.NOTEWhen any of the wheels are removed
and replaced for tire rotation or to
change a flat tire, always check the
tightness of the wheel nuts after driv-
ing approximately 600 miles (1,000 km).
If any nut is loose, tighten it to the
specified torque.
Aluminum wheelsAluminum wheels can be scratched and
damaged easily. Handle them carefully to
maintain their appearance, performance,
and safety.
.
When any of the wheels are removed
and replaced for tire rotation or to change
a flat tire, always check the tightness of
the wheel nuts after driving approximately
600 miles (1,000 km). If any nut is loose,
tighten it to the specified torque.
. Never apply oil to the threaded parts,
wheel nuts, or tapered surface of the
wheel.
. Never let the wheel rub against sharp
protrusions or curbs.
. When wheel nuts, balance weights, or
the center cap is replaced, be sure to
replace them with genuine SUBARU parts
designed for aluminum wheels.

Black plate (23,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 2
Specifications ..................................................... 12-2
Dimensions........................................................ 12-2
Engine ............................................................... 12-3
Electrical system ................................................ 12-3
Fuel ................................................................... 12-4
Lubricants. ......................................................... 12-5
Fluids ................................................................ 12-7
Engine coolant ................................................... 12-8 Tires
.................................................................. 12-9
Fuses and circuits ........................................... 12-10
Fuse panel located in the passenger
compartment ................................................. 12-10
Fuse panel located in the engine compartment ................................................. 12-12
Bulb chart......................................................... 12-14
Vehicle identification ....................................... 12-17
Specifications
12

Black plate (387,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
& TiresTire size 235/45R17245/40R18
Wheel size 1768J 1868
1/2J
Pressure Front
33 psi (230 kPa, 2.3 kgf/cm
2)
Rear 32 psi (220 kPa, 2.2 kgf/cm2)
Temporary spare tire Size T135/70 D17
Pressure 60 psi (420 kPa, 4.2 kgf/cm2)
Wheel nut tightening torque 72 lbf·ft (100 N·m, 10 kgf·m)*
*: This torque is equivalent to applying approximately 88 to 110 lbf (40 to 50 kgf) at the edge of the wheel nut wrench. If you have tightened the wheel
nuts by yourself, have the tightening torque checked at the nearest automotive service facility as soon as possible. Specifications
12-9
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
13-3
–CONTINUED –
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-