tire size SUBARU WRX 2016 User Guide

In case of emergency/If you park your vehicle in case of an emergency
If you park your vehicle in
case of an emergency
The hazard warning flasher should be
used in day or night to warn other drivers
when you have to park your vehicle under
emergency conditions.
Avoid stopping on the road. It is best to
safely pull off the road if a problem occurs.
The hazard warning flasher can be acti-
vated regardless of the ignition switch
position.
Turn on the hazard warning by pushing
the hazard warning flasher switch. Turn it
off by pushing the switch again. NOTE When the hazard warning flasher is on,
the turn signals do not work.
Temporary spare tire WARNINGWhen 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 tire pressure monitoring system
(TPMS) is unable to monitor all four
road wheels. Contact your SUBARU
dealer as soon as possible for tire
and sensor replacement and/or sys-
tem resetting.
CAUTION
. Never use any temporary spare
tire other than the original. Using
other sizes may result in severe
mechanical damage to the drive
train of your vehicle.
. Always conform to the following
instructions when using the tem-
porary spare tire. Otherwise, a
seriously dangerous situation
may occur.9-2

The temporary spare tire is smaller and
lighter than a conventional tire and is
designed for emergency use only. Re-
move the temporary spare tire and re-
install the conventional tire as soon as
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
as follows.
Mexico models: 33 psi (230 kPa, 2.3
kgf/cm 2
)
Other models: 60 psi (420 kPa, 4.2
kgf/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.
. Always set the driver ’ s control center
differential to the manual mode and adjust
the initial LSD torque to the minimum. Maintenance tools Your vehicle is equipped with the following
maintenance tools.
. Jack
. Jack handle
. Screwdriver
. Towing hook (eye bolt)
. Wheel nut wrench In case of emergency/Maintenance tools
– CONTINUED –9-3

Tires and wheels & Types of tires You should be familiar with type of tires
present on your vehicle.
! All season tires
All season tires are designed to provide
an adequate measure of traction, handling
and braking performance in year-round
driving including snowy and icy road
conditions. However all season tires do
not offer as much traction performance as
winter (snow) tires in heavy or loose snow
or on icy roads.
All season tires are identified by “ ALL
SEASON ” and/or “ M+S ” (Mud & Snow) on
the tire sidewall.
! Summer tires
Summer tires are high-speed capability
tires best suited for highway driving under
dry conditions.
Summer tires are inadequate for driving
on slippery roads such as on snow-
covered or icy roads.
If you drive your vehicle on snow-covered
or icy roads, we strongly recommend the
use of winter (snow) tires.
When installing winter tires, be sure to
replace all four tires. ! Winter (snow) tires
Winter tires are best suited for driving on
snow-covered and icy roads. However
winter tires do not perform as well as
summer tires and all season tires on roads
other than snow-covered and icy roads.
& Tire pressure monitoring
system (TPMS) (if equipped) 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 monitor-
ing system will activate only when the
vehicle is driven. 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).
If you adjust the tire pressures in a warm
garage and will then drive the vehicle in
cold outside air, the resulting drop in tire
pressures may cause the low tire pressure
warning light to illuminate. To avoid this
problem when adjusting the tire pressures
in a warm garage, inflate the tires to
pressures higher than those shown on the
tire placard. Specifically, inflate them by an
extra 1 psi (6.9 kPa, 0.07 kgf/cm 2
) for
every difference of 10 8 F (5.6 8 C) between
the temperature in the garage and the temperature outside. By way of example,
the following table shows the required tire
pressures that correspond to various out-
side temperatures when the temperature
in the garage is 60 8 F (15.6 8 C).
Example:
Tire size: 245/40R18 97W
Standard tire pressures:
Front: 33 psi (230 kPa, 2.3 kgf/cm 2
)
Rear: 32 psi (220 kPa, 2.2 kgf/cm 2
)
Garage temperature: 60 8 F (15.6 8 C)Outside
temperature Adjusted pressure
[psi (kPa, kgf/cm 2
)]
Front Rear
30 8 F( − 1 8 C) 36 (250, 2.5) 35 (240, 2.4)
10 8 F( − 12 8 C) 38 (260, 2.6) 37 (255, 2.55)
− 10 8 F( − 23 8 C) 40 (275, 2.75) 39 (270, 2.7)
If the low tire pressure warning light
illuminates when you drive the vehicle in
cold outside air after adjusting the tire
pressures in a warm garage, re-adjust the
tire pressures using the method described
above. Then, increase the vehicle speed
to at least 20 mph (32 km/h) and check to
see that the low tire pressure warning light
turns off a few minutes later. If the low tire
pressure warning light does not turn off,
the tire pressure monitoring system may
not be functioning normally. In this event, Maintenance and service/Tires and wheels
– CONTINUED –11-31

Maintenance and service/Tires and wheels
& Tire rotation direction mark
Example of tire rotation direction mark
1) Front
If 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. & Tire rotation
Vehicles equipped with 4 non-unidirec-
tional tires
1) Front
Vehicles equipped with unidirectional tires
1) Front Tire wear varies from wheel to wheel.
Move the tires to the positions shown in
the illustration each time they are rotated.
For the tire rotation schedule, refer to the
“ Warranty and Maintenance Booklet ” .
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 replacement The 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 detracts11-36

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 ’ sground
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 or installing
tire(s), all four tires must be the
same for the following items.
(a) Size
(b) Circumference
(c) Speed symbol
(d) Load index
(e) Construction
(f) Manufacturer
(g) Brand (tread pattern)
(h) Degrees of wear For items (a) to (d), you must
obey the specification that is
printed on the tire placard. The
tire placard is located on the
driver ’ s door pillar.
If all four tires are not the same in
items (a) to (h), there is a possi-
bility that it may lead to serious
mechanical damage to the drive
train of your car and affect the
following factors.
— Ride
— Handling
— Braking
— Speedometer/Odometer
calibration
— Clearance between the body
and the tires
It also may be dangerous and
lead to loss of vehicle control,
and it 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 replacement When 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.
WARNINGUse 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.
NOTE 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 driv-
ing approximately 600 miles (1,000 km).
If any nut is loose, tighten it to the
specified torque. Maintenance and service/Tires and wheels
11-37

Specifications/Specifications
& Electrical system Battery type and capacity (5HR) 55D23L
Alternator STI 12V-110A
Except STI 12V-130A
Spark plugs STI SILFR6A (NGK)
Except STI ILKAR8H6 (NGK)
& Tires Tire size 235/45R17 94W 245/40R18 97W
Wheel size
17 6 8J 18 6 8 1/2J
Pressure Front
33 psi (230 kPa, 2.3 kgf/cm 2
) 33 psi (230 kPa, 2.3 kgf/cm 2
)
Rear
32 psi (220 kPa, 2.2 kgf/cm 2
) 32 psi (220 kPa, 2.2 kgf/cm 2
)
Wheel nut tightening torque
89 lbf·ft (120 N·m, 12 kgf·m)* 1
*1: This torque is equivalent to applying approximately 88 to 110 lbf (40 to 50 kgf) at the end 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. For the wheel nut tightening
procedure, refer to “ Changing a flat tire ” F 9-4.
& Temporary spare tires Temporary spare tire size T145/70D17 205/50R17
Temporary spare tire inflation pressure
(recommended cold tire inflation pressure) 60 psi (420 kPa, 4.2 kgf/cm 2
) 33 psi (230 kPa, 2.3 kgf/cm 2
)
Wheel nut tightening torque
89 lbf·ft (120 N·m, 12 kgf·m)* 1
* 2
*1: This torque is equivalent to applying approximately 88 to 110 lbf (40 to 50 kgf) at the end 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.
*2: For the wheel nut tightening procedure, refer to “ Changing a flat tire ” F 9-4.12-8

Consumer information and Reporting safety defects/For U.S.A.
For U.S.A. The following information has been
compiled according 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 markings
can provide you with useful infor-
mation on the tire. ! Tire size
Your vehicle comes equipped with
P-Metric tire size. It is important to
understand the sizing system in
selecting the proper tire for your
vehicles. Here is a brief review of
the tire sizing system with a break-
down of its individual elements.
! P Metric
With the P-Metric system, Section
Width is measured in millimeters.
To convert millimeters into inches,
divide by 25.4. The Aspect Ratio
(Section Height divided by Section
Width) helps provide more dimen-
sional information about the tire
size. Example:
(1) P = Certain tire type used on
light duty vehicles such as passen-
ger cars
(2) Section Width in millimeters
(3) Aspect Ratio (= section height
7 section width).
(4) R = Radial Construction
(5) Rim diameter in inches
! Load and Speed Rating De-
scriptions
The load and speed rating descrip-
tions will appear following the size
designation.
They provide two important facts
about the tire. First, the number
designation is its load index. Sec-
ond, the letter designation indicates
the tire ’ s speed rating.13-2

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 markings
The following makings are also
placed on the sidewall.
! Maximum permissible infla-
tion pressure
The 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/Tire information
– CONTINUED –13-3

Consumer information and Reporting safety defects/Tire information
! 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. ”
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 type
Applicable construction of this tire.
For example, “ TUBELESS STEEL
BELTED RADIAL ”
! 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 SIDE-
WALL 2 POLYESTER ”! Uniform Tire Quality Grading
(UTQG)
For details, refer to “ Uniform tire
quality grading standards ” F 13-14 .
& Recommended tire inflation
pressure ! Recommended cold tire infla-
tion pressure
For recommended cold tire inflation
pressure for your vehicle ’ s tires,
refer to “ Tires ” F 12-8 .
! 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-inflation
Driving at high speeds with exces-
sively low tire pressures can cause
the tires to flex severely and to
rapidly become hot. A sharp in-13-4

.
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/Tire information
– CONTINUED –13-7