2005 SUBARU IMPREZA WRX tire size

8-37
Driving tips
– CONTINUED –
use towing mirrors that conform with Federal, state/
province and/or other applicable regulations. TTrailer lights
Connection of trailer lights to your vehicle’s electrical
system requires modifications to the vehicle’s lighting
circuit to increase its capacity and accommodate wir-
ing changes. To ensure the trailer lights are connected
properly, please consult your SUBARU dealer. Check
for proper operation of the turn signals, the brake
lights and parking lights each time you hitch up.
Direct splicing or other improper connection of
trailer lights may damage your vehicle’s electri-
cal system and cause a malfunction of your ve-
hicle’s lighting system.
T Tires
Make sure that all the tires on your vehicle are properly
inflated to the pressure specified on the tire placard lo-
cated on the left center pillar of your vehicle.
Trailer tire condition, size, load rating and proper infla-
tion pressure should be in accordance with the trailer
manufacturer’s specifications. In the event your vehicle gets a flat tire when towing a
trailer, ask a commercial road service to repair the flat
tire.
If you carry a regular size spare tire in your vehicle or
trailer as a precaution against getting a flat tire, be
sure that the spare tire is firmly secured.
Never tow a trailer when the temporary spare
tire is used. The temporary spare tire is not de-
signed to sustain the towing load. Use of the
temporary spare tire when towing can result in
failure of the spare tire and/or less stability of
the vehicle.
„ Trailer towing tips
yNever exceed 45 mph (72 km/h) when towing
a trailer in hilly country on hot days. y When towing a trailer, steering, stability,
stopping distance and braking performance
will be different from normal operation. For
safety’s sake, you should employ extra caution

9-3
In case of emergency
– CONTINUED –
Temporary spare tire
The temporary spare tire is smaller and lighter than a
conventional tire and is designed for emergency use
only. Remove the temporary spare tire and re-install
the conventional tire as soon as possible because the
spare tire is designed only for temporary use.
Check the inflation pressure of the temporary spare
tire periodically to keep the tire ready for use. The cor-
rect pressure is 60 psi (420 kPa, 4.2 kg/cm 2
).
When using the temporary spare tire, note the follow-
ing: y Do not exceed 50 mph (80 km/h).
y Do not put a tire chain on the temporary spare tire.
Because of the smaller tire size, a tire chain will not fit
properly. y Do not use two or more temporary spare tires at the
same time. y 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
y When the wear indicator appears on the tread, re-
place the tire.
1
2
US9525BB

9-4
In case of emergency
1) Spare fuse
2) FWD connector
NOTE
(If your vehicle is AWD with automatic transmis-
sion, except Turbo models) Before driving your
vehicle with the temporary spare tire, put a spare fuse inside the FWD connector in the main fuse
box located in the engine compartment and con-
firm that the Front-wheel drive warning light
“AWD” in the combination meter comes on. The
all wheel drive capability of the vehicle has now
deactivated. After re-installing the conventional
tire, remove the spare fuse from the FWD connec-
tor in order to reactivate all wheel drive.
Never tow a trailer when the temporary spare
tire is used. The temporary spare tire is not de-
signed to sustain the towing load. Use of the
temporary spare tire when towing can result in
failure of the spare tire and/or less stability of
the vehicle and may lead to an accident.
Never use any temporary spare tire other than
the original. Using other sizes may result in se-
vere mechanical damage to the drive train of
your vehicle.
1
2
USB501BB

11 -5 3
Maintenance and service
– CONTINUED –
After driving approximately 600 miles (1,000 km),
check the wheel nuts again and retighten any nut that
has become loose. „Tire replacement
The wheels and tires are important and integral parts
of your vehicle’s design; they cannot be changed arbi-
trarily. The tires fitted as standard equipment are opti-
mally 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 construc-
tion 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 con-
trollability, ride comfort, braking performance, speed-
ometer accuracy and odometer accuracy. It also cre-
ates incorrect body-to-tire clearances and inappropri-
ately changes the vehicle’s ground clearance.
All four tires must be the same in terms of manufactur-
er, brand (tread pattern), construction, and size. You
are advised to replace the tires with new ones that are
identical to those fitted as standard equipment.
For safe vehicle operation, SUBARU recommends re- placing all four tires at the same time.
y
All four tires must be the same in terms of
manufacturer, brand (tread pattern), construc-
tion, degree of wear, speed symbol, load index
and size. Mixing tires of different types, sizes or
degrees of wear can result in damage to vehi-
cle’s power train. Use of different types or sizes
of tires can also dangerously reduce controlla-
bility and braking performance and can lead to
an accident.y Use only radial tires. Do not use radial tires
together with belted bias tires and/or bias-ply
tires. Doing so can dangerously reduce control-
lability, resulting in an accident.
„ Wheel replacement
When replacing wheels due, for example, to damage,
make sure the replacement wheels match the specifi-
cations of the wheels that are fitted as standard equip-
ment. Replacement wheels are available from
SUBARU dealers.

12-5
Specifications
– CONTINUED –
„Tires
*1: The recommended cold tire pressure for the 215/45R17 87W tire is not indicated on the vehicle placard attached to the drive r’s
side B-pillar since this tire is a dealer option for the WRX. If your vehicle is equipped with 215/45R17 87W tires, be sure to adjust
them to the air pressure shown on this page.
ItemRS, RS sport package, WRXWRX (option tire)*1WRX-STi
Tire sizeP205/55R16 89V215/45R17 87W225/45R17 90W
Wheel size16 × 6 1
/2 JJ17
× 7 JJ17 × 8 JJ
PressureFront32 psi
(220 kPa, 2.2 kgf/cm 2
)33 psi
(230 kPa, 2.3 kgf/cm 2
)36 psi
(250 kPa, 2.5 kgf/cm 2
)
Rear29 psi
(200 kPa, 2.0 kgf/cm 2
)32 psi
(220 kPa, 2.2 kgf/cm 2
)30 psi
(210 kPa, 2.1 kgf/cm 2
)
Temporary spare tireSizeT135/70 D16T135/70 D17
Pressure60 psi (420 kPa, 4.2 kgf/cm 2
)

13-2
Consumer information and Reporting safety defects
Consumer information and Reporting safety defectsFor U.S.A.
The following information has been compiled accord-
ing to Code of Federal Regulations “Title 49, Part
575”.
Tire information „
Tire labeling
Many markings (e.g. Tire size, Tire Identification
Number or TIN) are placed on the sidewall of a
tire by tire manufacturers. These marking can
provide you with useful information on the tire. T Tire size
Your vehicle comes equipped with P-Metric tire
size. It is important to understand the sizing sys-
tem in selecting the proper tire for your vehicles.
Here is a brief review of the tire sizing system
with a breakdown of its individual elements. V P Metric
With the P-Metric system, Section Width is mea-
sured in millimeters. To convert millimeters into
inches, divide by 25.4. The Aspect Ratio (Sec-
tion Height divided by Section Width) helps pro- vide more dimensional information about the tire
size. Example:
(1) P = Certain tire type used on light duty vehi-
cles such as passenger cars
(2) Section Width in millimeters
(3) Aspect Ratio (= section height
÷ section
width).
(4) R = Radial Construction
(5) Rim diameter in inches V Load and Speed Rating Descriptions
The load and speed rating descriptions will ap-
pear following the size designation.
They provide two important facts about the tire.
First, the number designation is its load index.
Second, the letter designation indicates the tire’s
speed rating.P 205 / 55 R 16
(1) (2) (3) (4) (5)

13-3
Consumer information and Reporting safety defects
– CONTINUED –
Example:
(6) Load Index: A numerical code which speci-
fies the maximum load a tire can carry at the
speed indicated by its speed symbol, at maxi-
mum inflation pressure.
For example, “90” means 1,323 lbs (600 kg), “89”
means 1,278 lbs (580 kg).
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 de-
scribing a tire’s capability to travel at established
and predetermined speeds.
For example, “V” means 149 mph (240 km/h)
y 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. y The speed rating is void if the tires are
worn out, damaged, repaired, retreaded, or
otherwise altered from their original condi-
tion. If tires are repaired, retreaded, or oth-
erwise altered, they may not be suitable for
original equipment tire designed loads and
speeds.
T Tire Identification Number (TIN)
Tire Identification Number (TIN) is marked on the
intended outboard sidewall. The TIN is com-
posed of four groups. Here is a brief review of the
TIN with a breakdown of its individual elements.
(1) Manufacturer’s Identification Mark
P 205 / 55 R 16 89 V Size designation (6) (7)
DOT XX XX XXX XXXX
(1) (2) (3)(4)

13-4
Consumer information and Reporting safety defects
(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 cal-
endar year; the second two figures represent the
year. For example, 0101 means the 1st week of
2001. T
Other markings
The following makings are also placed on the
sidewall. V Maximum permissible inflation pressure
The maximum cold inflation pressure to which
this tire may be inflated. For example, “300 kpa
(44 PSI) MAX. PRESS” V Maximum load rating
The 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.”
Maximum load rating applies only to the
tire, not to the vehicle. Putting a load rated
tire on any vehicle does not mean the vehi-
cle can be loaded up to the tire’s rated
load.
V Construction type
Applicable construction of this tire.
For example, “TUBELESS STEEL BELTED RA-
DIAL” V Construction
The 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 SIDEWALL 2 POLYESTER” V Uniform Tire Quality Grading (UTQG)
For details, refer to “Uniform tire quality grading
standards” in this chapter.