Subaru BRZ (2019 year). Manual — part 32

502

6-1. Specifications

BRZ_U

Tire information

Typical tire symbols

Standard tire

Compact spare tire

Tire size

(

→P. 505)

DOT and Tire Identification Number (TIN)

(

→P. 504)

Uniform tire quality grading

For details, see “Uniform Tire Quality Grading” that follows.

Location of treadwear indicators

(

→P. 369)

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Tire ply composition and materials

Plies are layers of rubber-coated parallel cords. Cords are the
strands which form the plies in a tire.

Radial tires or bias-ply tires

A radial tire has “RADIAL” on the sidewall. A tire not marked
“RADIAL” is a bias-ply tire.

TUBELESS or TUBE TYPE

A tubeless tire does not have a tube and air is directly filled in the
tire. A tube type tire has a tube inside the tire and the tube main-
tains the air pressure.

Load limit at maximum cold tire inflation pressure

(

→P. 372)

Maximum cold tire inflation pressure

(

→P. 496)

This means the pressure to which a tire may be inflated.

Summer tire or all season tire

(

→P. 372)

An all season tire has “M+S” on the sidewall. A tire not marked
“M+S” is a summer tire.

“TEMPORARY USE ONLY”

(

→P. 458)

A compact spare tire is identified by the phrase “TEMPORARY
USE ONLY” molded into its sidewall. This tire is designed for tem-
porary emergency use only.

504

6-1. Specifications

BRZ_U

Typical DOT and tire identification number (TIN)

DOT symbol

*

Tire Identification Number
(TIN)
Tire manufacturer's identifica-
tion mark
Tire size code
Manufacturer's optional tire
type code (3 or 4 letters)
Manufacturing week
Manufacturing year
Manufacturer's code

*

: The DOT symbol certifies

that the tire conforms to
applicable Federal Motor
Vehicle Safety Standards.

Type A

Type B

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Tire size

■

Typical tire size information

The illustration indicates typical
tire size.

Tire use
(P = Passenger car,
T = Temporary use)
Section width (millimeters)
Aspect ratio
(tire height to section width)
Tire construction code
(R = Radial, D = Diagonal)
Wheel diameter (inches)
Load index (2 or 3 digits)
Speed symbol
(alphabet with one letter)

■

Tire dimensions

Section width
Tire height
Wheel diameter

506

6-1. Specifications

BRZ_U

Tire section names

Bead
Sidewall
Shoulder
Tread
Belt
Inner liner
Reinforcing rubber
Carcass
Rim lines
Bead wires
Chafer

Uniform Tire Quality Grading

This information has been prepared in accordance with regulations
issued by the National Highway Traffic Safety Administration of the
U.S. Department of Transportation.
It provides the purchasers and/or prospective purchasers of
SUBARU vehicles with information on uniform tire quality grading.

Your SUBARU dealer will help answer any questions you may have as
you read this information.

■

DOT quality grades
All passenger vehicle tires must conform to Federal Safety
Requirements in addition to these grades. Quality grades can be
found where applicable on the tire sidewall between tread shoulder
and maximum section width.

For example: Treadwear 200 Traction AA Temperature A

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■

Treadwear
The treadwear grade is a comparative rating based on the wear
rate of the tire when tested under controlled conditions on a speci-
fied government test course.

For example, a tire graded 150 would wear one and a half (1 - 1/2)
times as well on the government course as a tire graded 100.
The relative performance of tires depends upon the actual conditions
of their use. Performance may differ significantly from the norm due
to variations in driving habits, service practices and differences in
road characteristics and climate.

■

Traction AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B and C,
and they represent the tire’s ability to stop on wet pavement as
measured under controlled conditions on specified government
test surfaces of asphalt and concrete.

A tire marked C may have poor traction performance.

Warning: The traction grade assigned to this tire is based on braking
(straight ahead) traction tests and does not include cornering (turn-
ing) traction.

■

Temperature A, B, C
The temperature grades are A (the highest), B, and C, represent-
ing the tire’s resistance to the generation of heat and its ability to
dissipate heat when tested under controlled conditions on a speci-
fied indoor laboratory test wheel.

Sustained high temperature can cause the material of the tire to
degenerate and reduce tire life, and excessive temperature can lead
to sudden tire failure.

Grade C corresponds to a level of performance which all passenger
car tires must meet under the Federal Motor Vehicle Safety Standard
No. 109.

Grades B and A represent higher levels of performance on the labo-
ratory test wheel than the minimum required by law.

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6-1. Specifications

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Warning: The temperature grades of a tire assume that it is properly
inflated and not overloaded.
Excessive speed, underinflation, or excessive loading, either sepa-
rately or in combination, can cause heat buildup and possible tire fail-
ure.

Glossary of tire terminology

Tire related term

Meaning

Cold tire inflation
pressure

Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1 mile or 1.5 km under
that condition

Maximum inflation
pressure

The maximum cold inflated pressure to which a
tire may be inflated, shown on the sidewall of
the tire

Recommended
inflation pressure

Cold tire inflation pressure recommended by a
manufacturer.

Accessory weight

The combined weight (in excess of those stan-
dard items which may be replaced) of auto-
matic transmission, 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)

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

Maximum loaded
vehicle weight

The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight

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Tire related term

Meaning

Normal occupant
weight

150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1

*

that

follows

Occupant distribution

Distribution of occupants in a vehicle as speci-
fied in the third column of Table 1

*

below

Production options
weight

The combined weight of installed regular pro-
duction options weighing over 5 lb. (2.3 kg) in
excess of the standard items which they
replace, not previously considered in curb
weight or accessory weight, including heavy
duty brakes, ride levelers, roof rack, heavy duty
battery, and special trim

Rim

A metal support for a tire or a tire and tube
assembly upon which the tire beads are seated

Rim diameter
(Wheel diameter)

Nominal diameter of the bead seat

Rim size designation

Rim diameter and width

Rim type designation

The industry manufacturer’s designation for a
rim by style or code

Rim width

Nominal distance between rim flanges

Vehicle capacity
weight (Total load
capacity)

The rated cargo and luggage load plus 150 lb.
(68 kg) times the vehicle’s designated seating
capacity

Vehicle maximum load
on the tire

The load on an individual tire that is determined
by distributing to each axle its share of the
maximum loaded vehicle weight, and dividing
by two

510

6-1. Specifications

BRZ_U

Tire related term

Meaning

Vehicle normal load
on the tire

The load on an individual tire that is determined
by distributing to each axle its share of curb
weight, accessory weight, and normal occu-
pant weight (distributed in accordance with
Table 1

*

below), and dividing by two

Weather side

The surface area of the rim not covered by the
inflated tire

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 angles
substantially less than 90 degrees to the cen-
terline 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

Cord

The strands forming the plies in the tire

Cord separation

The parting of cords from adjacent rubber com-
pounds

Cracking

Any parting within the tread, sidewall, or inner-
liner of the tire extending to cord material

CT

A pneumatic tire with an inverted flange tire
and rim system in which the rim is designed
with rim flanges pointed radially inward and the
tire is designed to fit on the underside of the
rim in a manner that encloses the rim flanges
inside the air cavity of the tire

511

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Tire related term

Meaning

Extra load tire

A tire designed to operate at higher loads and
at higher inflation pressures than the corre-
sponding 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

(a)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
(b)The outward facing sidewall of an asymmet-
rical tire that has a particular side that must
always face outward when mounted on a vehi-
cle

Light truck (LT) tire

A tire designated by its manufacturer as prima-
rily intended for use on lightweight trucks or
multipurpose passenger vehicles

Load rating

The maximum load that a tire is rated to carry
for a given inflation pressure

Maximum load rating

The load rating for a tire at the maximum per-
missible inflation pressure for that tire

Maximum permissible
inflation pressure

The maximum cold inflation pressure to which
a tire may be inflated

Measuring rim

The rim on which a tire is fitted for physical
dimension requirements

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

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Tire related term

Meaning

Overall width

The linear distance between the exteriors of
the sidewalls of an inflated tire, including eleva-
tions due to labeling, decorations, or protective
bands or ribs

Passenger car tire

A tire intended for use on passenger cars, mul-
tipurpose passenger vehicles, and trucks, that
have a gross vehicle weight rating (GVWR) of
10,000 lb. or less.

Ply

A layer of rubber-coated parallel cords

Ply separation

A parting of rubber compound between adja-
cent plies

Pneumatic tire

A mechanical device made of rubber, chemi-
cals, fabric and steel or other materials, that,
when mounted on an automotive wheel, pro-
vides the traction and contains the gas or fluid
that sustains the load

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

Reinforced tire

A tire designed to operate at higher loads and
at higher inflation pressures than the corre-
sponding standard tire

Section width

The linear distance between the exteriors of
the sidewalls of an inflated tire, excluding ele-
vations due to labeling, decoration, or protec-
tive bands

Sidewall

That portion of a tire between the tread and
bead

Sidewall separation

The parting of the rubber compound from the
cord material in the sidewall

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*

: Table 1

 Occupant loading and distribution for vehicle normal load

for various designated seating capacities

Tire related term

Meaning

Snow tire

A tire that attains a traction index equal to or
greater than 110, compared to the ASTM E-
1136 Standard Reference Test Tire, when
using the snow traction test as described in
ASTM F-1805-00, Standard Test Method for
Single Wheel Driving Traction in a Straight Line
on Snow-and Ice-Covered Surfaces, and which

is marked with an Alpine Symbol (

) on at

least one sidewall

Test rim

The rim on which a tire is fitted for testing, and
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

Tread rib

A tread section running circumferentially
around a tire

Tread separation

Pulling away of the tread from the tire carcass

Treadwear indicators
(TWI)

The projections within the principal grooves
designed to give a visual indication of the
degrees of wear of the tread

Wheel-holding fixture

The fixture used to hold the wheel and tire
assembly securely during testing

514

6-1. Specifications

BRZ_U

Designated seating

capacity, Number of

occupants

Vehicle normal load,

Number of occupants

Occupant distribution in

a normally loaded

vehicle

2 through 4

2

2 in front

5 through 10

3

2 in front, 1 in second

seat

11 through 15

5

2 in front, 1 in second
seat, 1 in third seat, 1

in fourth seat

16 through 22

7

2 in front, 2 in second
seat, 2 in third seat, 1

in fourth seat

515

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6-2. Customization

Customizable features

Item

Function

Default setting

Customized

setting

Keyless
access with
push button
start system
(

→P. 25)

Keyless access with
push button start sys-
tem

On

Off

Operation signal
(Hazard warning flash-
ers)

On

Off

Operation signal
(Buzzer)

On

Off

Operation buzzer
volume

Level 5

Level 0 to 7

Number of permissible
times of continuous
smart lock

Twice

Unlimited

Remote key-
less entry
system
(

→P. 38)

Unlocking operation

Driver's door
unlocked in
one step, both
side doors
unlocked in
two steps

Both side
doors
unlocked in
one step

Automatic door lock
function to be activated
if door is not opened
after being unlocked

On

Off

Your vehicle includes a variety of electronic features that can be per-
sonalized to your preferences. Programming these preferences
requires specialized equipment and may be performed by your
SUBARU dealer.

Some function settings are changed simultaneously with other functions
being customized. Contact your SUBARU dealer.

516

6-2. Customization

BRZ_U

Remote key-
less entry
system
(

→P. 38)

Time elapsed before
automatic door lock
function is activated if
door is not opened after
being unlocked

60 seconds

30 seconds

120 seconds

Operation signal
(Hazard warning flash-
ers)

On

Off

Operation signal
(Buzzer)

On

Off

Operation buzzer
volume

Level 5

Level 0 to 7

Door lock buzzer

On

Off

Trunk lid unlocking
function

On

Off

Trunk lid unlocking
operation

Push and hold

(short)

Push and hold

(long)

One short push

Two short

pushes

Panic function

On

Off

Vehicle finder function

On

Off

Alarm
(

→P. 87)

(vehicles
with a key-
less access
with push
button start
system)

Operation when doors
are unlocked using the
mechanical key

Off

On

Item

Function

Default setting

Customized

setting

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Turn signal
lever
(

→P. 195)

Lane change turn sig-
nal function

On

Off

Automatic
light control
system
(

→P. 233)

Light sensor sensitivity

±0%

-40% to +40%

Lights
(

→P. 233)

Time that the welcome
lighting system oper-
ates (when entering/
exiting the vehicle)

30 seconds

Off

60 seconds

90 seconds

Windshield wiper-linked
automatic headlights

On

Off

Rear window
defogger
(

→P. 298)

Time elapsed before
the rear window defog-
ger turn off (vehicles
with automatic air con-
ditioning system)

15 minutes

Continue

Illumination
(

→P. 302)

Time elapsed before
lights turn off

15 seconds

7.5 seconds

30 seconds

Operation when the
doors are unlocked

On

Off

Operation after the
engine switch is turned
off

On

Off

Interior light illumination
upon approach (vehi-
cles with a keyless
access with push but-
ton start system)

On

Off

Interior light illumination

On

Off

Item

Function

Default setting

Customized

setting