Get Vehicle specifications -> Specifications-Tire information Guide for Toyota Corolla 4 Door 2023

401

8-1. Specifications

Tire information

Typical tire symbols

 Full-size tire

Tire size (P .403)

DOT and Tire Identification Number (TIN) (P .403)

Uniform tire quality grading

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

Location of treadwear indicators (P.311)

Tire ply composition and materials

Plies are layers of rubber-coated parallel cords. Cords are the strands

which form the plies in a tire.

8

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 put into the tire. A

tube type tire has a tube inside the tire and the tube maintains the air pres-

sure.

Load limit at maximum cold tire inflation pressure (P.311)

Maximum cold tire inflation pressure (P.397)

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

Summer tires or all season tires (P.312)

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8-1. Specifications

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

summer tire.

 Compact spare tire

“TEMPORARY USE ONLY”

A compact spare tire is identified by the phrase “TEMPORARY USE ONLY”

molded on its sidewall. This tire is designed for temporary emergency use

only.

Tire size (P .403)

DOT and Tire Identification Number (TIN) (P .403)

Load limit at maximum cold tire inflation pressure (P.311)

Location of treadwear indicators (P.311)

Maximum cold tire inflation pressure (P.397)

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

Tire ply composition and materials

Plies are layers of rubber-coated parallel cords. Cords are the strands

which form the plies in a tire.

TUBELESS or TUBE TYPE

A tubeless tire does not have a tube and air is directly put into the tire. A

tube type tire has a tube inside the tire and the tube maintains the air pres-

sure.

Radial tires or bias-ply tires

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

bias-ply tire.

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8-1. Specifications

DOT symbol^*

Typical DOT and Tire

Identification Number

(TIN)

Tire Identification Number

(TIN)

Tire manufacturer’s identifi-

cation mark

 Type A

Manufacturer’s code

Manufacturing week

Manufacturing year

*

: The DOT symbol certifies that the

tire conforms to applicable Fed-

eral Motor Vehicle Safety Stan-

dards.

DOT symbol^*

Tire size

Tire Identification Number

(TIN)

■ Typical tire size information

The illustration indicates typical

tire size.

Tire manufacturer’s identifi-

cation mark

Tire size code

Manufacturer’s optional tire

type code (3 or 4 letters)

Manufacturing week

Manufacturing year

*

: The DOT symbol certifies that the

8

tire conforms to applicable Fed-

eral Motor Vehicle Safety Stan-

dards.

Tire use (P = Passenger car,

T = Temporary use)

 Type B

Section width (millimeters)

Aspect ratio (tire height to

section width)

Tire construction code (R =

Radial, D = Diagonal)

Wheel diameter (inches)

Load index (2 digits or 3 dig-

its)

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8-1. Specifications

Speed symbol (alphabet with

one letter)

Chafer

Uniform Tire Quality

Grading

■ Tire dimensions

This information has been pre-

pared in accordance with regu-

lations issued by the National

Highway Traffic Safety Adminis-

tration of the U.S. Department of

Transportation.

It provides the purchasers

and/or prospective purchasers

of Toyota vehicles with informa-

tion on uniform tire quality grad-

ing.

Section width

Tire height

Wheel diameter

Your Toyota dealer will help answer

any questions you may have as you

read this information.

Tire section names

■ 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.

Bead

Sidewall

Shoulder

Tread

For example: Treadwear 200 Trac-

tion AA Temperature A

■ Treadwear

The treadwear grade is a com-

parative rating based on the

wear rate of the tire when tested

under controlled conditions on a

specified government test

course.

Belt

Inner liner

Reinforcing rubber

Carcass

Rim lines

Bead wires

For example, a tire graded 150

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8-1. Specifications

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.

(the highest), B, and C, repre-

senting the tire’s resistance to

the generation of heat and its

ability to dissipate heat when

tested under controlled condi-

tions on a specified indoor labo-

ratory 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.

■ Traction AA, A, B, C

The traction grades, from high-

est 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 govern-

ment test surfaces of asphalt

and concrete.

Grade C corresponds to a level of

performance which all passenger

car tires must meet under the Fed-

eral 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.

A tire marked C may have poor

traction performance.

Warning: The temperature grades

of a tire assume that it is properly

inflated and not overloaded.

Warning: The traction grade

assigned to this tire is based on

braking (straight ahead) traction

tests and does not include corner-

ing (turning) traction.

Excessive speed, underinflation, or

excessive loading, either sepa-

rately or in combination, can cause

heat buildup and possible tire fail-

ure.

■ Temperature A, B, C

8

The temperature grades are A

Glossary of tire terminology

Tire related term

Meaning

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

Cold tire inflation pressure

Maximum inflation pressure

The maximum cold inflated pressure to

which a tire may be inflated, shown on the

sidewall of the tire

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8-1. Specifications

Tire related term

Meaning

Recommended inflation pres- Cold tire inflation pressure recommended

sure

by a manufacturer

The combined weight (in excess of those

standard items which may be replaced) of

automatic transmission, power steering,

power brakes, power windows, power

seats, radio and heater, to the extent that

these items are available as fac-

tory-installed equipment (whether installed

or not)

Accessory weight

The weight of a motor vehicle with stan-

dard equipment, including the maximum

capacity of fuel, oil and coolant, and if so

equipped, air conditioning and additional

weight optional engine

Curb weight

The sum of:

(a) Curb weight

Maximum loaded vehicle

weight

(b) Accessory weight

(c) Vehicle capacity weight

(d) Production options weight

150 lb. (68 kg) times the number of occu-

pants specified in the second column of

Normal occupant weight

Occupant distribution

*

Table 1 that follows

Distribution of occupants in a vehicle as

*

specified in the third column of Table 1

below

The combined weight of installed regular

production 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

Production options weight

A metal support for a tire or a tire and tube

assembly upon which the tire beads are

seated

Rim

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8-1. Specifications

Meaning

Tire related term

Rim diameter (Wheel diame-

ter)

Nominal diameter of the bead seat

Rim diameter and width

Rim size designation

Rim type designation

Rim width

The industry manufacturer’s designation

for a rim by style or code

Nominal distance between rim flanges

The rated cargo and luggage load plus 150

lb. (68 kg) times the vehicle’s designated

seating capacity

Vehicle capacity weight (Total

load capacity)

The load on an individual tire that is deter-

Vehicle maximum load on the mined by distributing to each axle its share

tire

of the maximum loaded vehicle weight,

and dividing by two

The load on an individual tire that is deter-

mined by distributing to each axle its share

of curb weight, accessory weight, and nor-

mal occupant weight (distributed in accor-

Vehicle normal load on the tire

*

dance with Table 1 below), and dividing by

two

The surface area of the rim not covered by

the inflated tire

Weather side

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

8

A breakdown of the bond between compo-

nents in the bead

Bead separation

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 centerline of the tread

Bias ply tire

Carcass

The tire structure, except tread and side-

wall rubber which, when inflated, bears the

load

The breaking away of pieces of the tread

or sidewall

Chunking

Cord

The strands forming the plies in the tire

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8-1. Specifications

Tire related term

Meaning

The parting of cords from adjacent rubber

compounds

Cord separation

Any parting within the tread, sidewall, or

innerliner of the tire extending to cord

material

Cracking

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 cav-

ity of the tire

CT

A tire designed to operate at higher loads

and at higher inflation pressures than the

corresponding standard tire

Extra load tire

Groove

The space between two adjacent tread ribs

The layer(s) forming the inside surface of a

tubeless tire that contains the inflating

medium within the tire

Innerliner

The parting of the innerliner from cord

material in the carcass

Innerliner separation

(a) The sidewall that contains a whitewall,

bears white lettering, or bears manufac-

turer, brand, and/or model name molding

that is higher or deeper than the same

molding on the other sidewall of the tire, or

Intended outboard sidewall

(b) The outward facing sidewall of an

asymmetrical tire that has a particular side

that must always face outward when

mounted on a vehicle

A tire designated by its manufacturer as

primarily intended for use on lightweight

trucks or multipurpose passenger vehicles

Light truck (LT) tire

The maximum load that a tire is rated to

carry for a given inflation pressure

Load rating

The load rating for a tire at the maximum

permissible inflation pressure for that tire

Maximum load rating

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409

8-1. Specifications

Tire related term

Meaning

Maximum permissible inflation The maximum cold inflation pressure to

pressure

which a tire may be inflated

The rim on which a tire is fitted for physical

dimension requirements

Measuring rim

Any parting at any junction of tread, side-

wall, or innerliner that extends to cord

material

Open splice

Outer diameter

The overall diameter of an inflated new tire

The linear distance between the exteriors

of the sidewalls of an inflated tire, including

elevations due to labeling, decorations, or

protective bands or ribs

Overall width

A tire intended for use on passenger cars,

multipurpose passenger vehicles, and

trucks, that have a gross vehicle weight

rating (GVWR) of 10,000 lb. or less.

Passenger car tire

Ply

A layer of rubber-coated parallel cords

A parting of rubber compound between

adjacent plies

Ply separation

A mechanical device made of rubber,

chemicals, fabric and steel or other materi-

als, that, when mounted on an automotive

wheel, provides the traction and contains

the gas or fluid that sustains the load

Pneumatic tire

8

A pneumatic tire in which the ply cords that

extend to the beads are laid at substan-

tially 90 degrees to the centerline of the

tread

Radial ply tire

Reinforced tire

A tire designed to operate at higher loads

and at higher inflation pressures than the

corresponding standard tire

The linear distance between the exteriors

of the sidewalls of an inflated tire, exclud-

ing elevations due to labeling, decoration,

or protective bands

Section width

Sidewall

That portion of a tire between the tread

and bead

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410

8-1. Specifications

Tire related term

Meaning

The parting of the rubber compound from

the cord material in the sidewall

Sidewall separation

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 Trac-

tion in a Straight Line on Snow-and

Snow tire

Ice-Covered Surfaces, and which is

marked with an Alpine Symbol (

least one sidewall

) on at

The rim on which a tire is fitted for testing,

and may be any rim listed as appropriate

for use with that tire

Test rim

That portion of a tire that comes into con-

tact with the road

Tread

A tread section running circumferentially

around a tire

Tread rib

Pulling away of the tread from the tire car-

cass

Tread separation

The projections within the principal

grooves designed to give a visual indica-

tion of the degrees of wear of the tread

Treadwear indicators (TWI)

Wheel-holding fixture

The fixture used to hold the wheel and tire

assembly securely during testing

*

: Table 1 -Occupant loading and distribution for vehicle normal load for var-

ious designated seating capacities

Designated seating

capacity, Number of

occupants

Occupant distribution in

a normally loaded vehi-

cle

Vehicle normal load,

Number of occupants

2 through 4

2

3

2 in front

2 in front, 1 in second

seat

5 through 10

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8-1. Specifications

Designated seating

capacity, Number of

occupants

Occupant distribution in

a normally loaded vehi-

cle

Vehicle normal load,

Number of occupants

2 in front, 1 in second

seat, 1 in third seat, 1 in

fourth seat

11 through 15

16 through 20

5

7

2 in front, 2 in second

seat, 2 in third seat, 1 in

fourth seat

8

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Vehicle specifications -> Specifications-Tire information for Your Toyota Corolla 4 Door 2023

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