inflation pressure SUBARU BRZ 2022 User Guide

Tires and Wheels
365
Maintenance and Service11
– 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 arbitrarily. 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 perfor-
mance, ride comfort, and service life. It is
essential for every tire to have a size and
construction matching those shown on the
tire inflation pressure label and to have a
speed symbol and load index matching
those shown on the tire inflation pressure
label.
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),
construction, 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.
■
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.
WARNING

When replacing or installing
tire(s), all four tires must be the
same for the following items.
(a) Size(b) Speed symbol(c) Load index(d) Circumference(e) Construction(f) Manufacturer(g) Brand (tread pattern)(h) Degrees of wearFor items (a) to (c), you must
obey the specification that is
printed on the tire inflation pres-
sure label. The tire inflation pres-
sure label is located on the
driver’s center pillar.
If all four tires are not the same in
items (a) to (h), serious mechani-
cal damage could be caused to
the drivetrain of the car, and
affect the followings.- Ride- Handling- Braking- Speedometer/Odometer cali- bration- Clearance between the bodyand 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 reduce
controllability, resulting in an
accident.
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Vehicle Identification
39012-3. Vehicle Identification
8
762
3
4
5
1
C00477
1) Vehicle identification number under thefloor carpet of the right-hand front seat
2) Emission control label
3) Certification and bar code label
4) Tire inflation pressure label (vehicle placard)
5) Vehicle identification number label
6) Model number label
7) Fuel label
8) Air conditioner label
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Consumer Information and Reporting Safety Defects13
Consumer Information and Reporting Safety Defects
13-1. For U.S.A............................................................394
13-2. Tire Information.................................................394
Tire Labeling .................................................................394
Recommended Tire Inflation Pressure .......................396
Glossary of Tire Terminology......................................397
Tire Care – Maintenance and Safety Practices ..........401
Vehicle Load Limit – How to Determine .....................402
Determining Compatibility of Tire and Vehicle Load Capacities..........................................................405
Adverse Safety Consequences of Overloading on Handling and Stopping and on Tires........................405
Steps for Determining Correct Load Limit .................406
13-3. Uniform Tire Quality Grading Standards ........406
TREADWEAR ............................................................... 407
TRACTION AA, A, B, C ................................................ 407
TEMPERATURE A, B, C............................................... 407
13-4. Reporting Safety Defe cts (USA) ......................408
13-5. How to Contact Transport Canada in Order to Report a Safety Concern Relating
to the Vehicle (Canada) ....................................408
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Tire Information
395
Consumer Information and Reporting Safety Defects13
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(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, “
91” means 1,356 lbs
(615 kg), “90” means 1,323 lbs (600 kg),
“89
” means 1,279 lbs (580 kg)
(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) ▼
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 indi-
vidual elements. (1) DOT symbol*
(2) Manufacturer’s Identification
Mark
(3) Tire Size Code
(4) Tire Type Code
(5) 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.
*: The DOT symbol certifies that the tire conforms to applicable
Federal Motor Vehicle Safety
Standards.
▼ Other markings
The following makings are also
placed on the sidewall.
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.
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,
damaged, repaired,
retreaded, or otherwise
altered from their original
condition. If tires are
repaired, retreaded, or other-
wise altered, they may not be
suitable for original equip-
ment tire designed loads and
speeds.
DOT XX XX XXX XXXX
(2)(1) (3) (4) (5)
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Tire Information
396
▽Maximum permissible infla-
tion pressure
The maximum cold inflation pres-
sure to which this tire may be
inflated. For example, “350 kPa (51
PSI) MAX. PRESS”
▽ Maximum load rating
The load rating at the maximum
permissible weight load for this tire.
For example, “MAX. LOAD 615 kg
(1,356 LBS) @ 350 kPa (51 PSI)
MAX. PRESS.”
▽ 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 + 1
NYLON SIDEWALL 2 POLY-
ESTER”
▽Uniform Tire Quality
Grading (UTQG)
For details, refer to
"Uniform Tire
Quality Grading Standards" 
P406.
■Recommended Tire Inflation
Pressure▼ Recommended cold tire infla-
tion pressure
For the recommended cold tire infla-
tion pressure for your vehicle’s tires,
refer to
"Tires" 
P385. ▼
Vehicle placard
The vehicle placard is affixed to the
driver’s side B-pillar.
Example:
WARNING
Maximum load rating applies
only to the tire, not to the vehi-
cle. Putting a load rated tire on
any vehicle does not mean the
vehicle can be loaded up to
the tire’s rated load.
B02109
XX
D00155
TIRE
PNEU
FRONT AVANT PXXX/XXRXX XXXKPA, XXPSI
REAR
ARRI¨RE PXXX/XXRXX XXXKPA, XXPSI
TXXX/XXDXX XXXKPA, XXPSI
SPARE
DE SECOURS SIZE
DIMENSIONS COLD TIRE PRESSURE
PRESSION DES
PNEUS  FROID
TIRE AND LOADING INFORMATION
RENSEIGNEMENTS SUR LES PNEUS ET LE CHARGEMENT
SEE OWNERS MANUAL FOR ADDITIONAL
INFORMATION
VOIR LE MANUEL DE LUSAGER
POUR PLUS DE
RENSEIGNEMENTSFRONT
AVANT REAR
ARRI¨RE
SEATING CAPACITY
NOMBRE DE PLACES
TOTAL
XX
X
The combined weight of occupants and cargo should never exceed XXXkg or \
XXXlbs.
Le poids total des occupants et du chargement ne doit jamais dØpasser\
XXXkg ou XXXlb.
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Tire Information
397
Consumer Information and Reporting Safety Defects13
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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
increase in temperature could
cause tread separation, and failure
of the tire(s). Possible resulting loss
of vehicle control could lead to an
accident.
▼ Measuring and adjusting air
pressure to achieve proper
inflation
Check and, if necessary, adjust the
pressure of each tire (including the
spare) at least once a month and
before any long journey. Check the
tire pressures when the tires are
cold. Use a pressure gauge to adjust the tire pressures to the
specific values. Driving even a short
distance warms up the tires and
increases the tire pressures. Also,
the tire pressures are affected by
the outside temperature. It is best to
check tire pressure outdoors before
driving the vehicle. When a tire
becomes warm, t
he air inside it
expands, causing the tire pressure
to increase. Be careful not to
mistakenly release air from a warm
tire to reduce its pressure.
■ Glossary of Tire TerminologyAccessory weight
The combined weight (in excess of
those standard items which may be
replaced) of automatic transmis-
sion, power steering, power brakes,
power windows, power seats, radio,
and heater, to the extent that these
items are available as factory-
installed equipment (whether
installed or not).
 Bead
The part of the tire that is made of
steel wires, wrapped or reinforced by ply cords and that is shaped to fit
the rim.

Bead separation
A breakdown of the bond between
components in the bead.
 Bias ply tire
A pneumatic tire in which the ply
cords that extend to the beads are
laid at alternate an gles substantially
less than 90 degrees to the
centerline of the tread.
 Carcass
The tire structure, except tread and
sidewall rubber which, when
inflated, bears the load.
 Chunking
The breaking away of pieces of the
tread or sidewall.
 Cold tire pressure
The pressure in a tire that has been
driven less than 1 mile or has been
standing for three hours or more.
 Cord
The strands forming the plies in the
tire.
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Tire Information
398Cord separation
The parting of cords from adjacent
rubber compounds.
 Cracking
Any parting within the tread,
sidewall, or inner liner of the tire
extending to cord material.
 Curb weight
The weight of a motor vehicle with
standard equipment including the
maximum capacity of fuel, oil and
coolant, and if so equipped, air
conditioning and additional weight
optional engine.
 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
surface 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 sidewall of
the tire, or
(2) The outward facing sidewall
of an asymmetrical tire that has a
particular side that must always
face outward when mounting 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 pres-
sure 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
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Tire Information
399
Consumer Information and Reporting Safety Defects13
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Occupant distribution
Distribution of occupants in a
vehicle 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.
 Passenger car tire
A tire intended for use on passenger
cars, multipurpose passenger vehi-
cles, 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
rubber, 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.
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