Toyota Camry (2018 year). Manual - part 137

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8-1. Specifications

Tire section names

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8-1. Specifications

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Your Toyota dealer will help answer any questions you may have as

you read this information.

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DOT quality grades
All passenger vehicle tires must conform to Federal Safety Require-
ments 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 condi-

tions 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.

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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.

Uniform Tire Quality Grading

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8-1. Specifications

Temperature A, B, C
The temperature grades are A (the highest), B, and C, representing
the tire’s resistance to the generation of heat and its ability to dissi-
pate heat when tested under controlled conditions on a specified
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 Stan-

dard No. 109.
Grades B and A represent higher levels of performance on the labo-

ratory test wheel than the minimum required by law.
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

failure.

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8-1. Specifications

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Tire related term

Meaning

Cold tire inflation pres-

sure

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 infla-

tion 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 vehi-

cle weight

The sum of:

(a) Curb weight

(b) Accessory weight

(c) Vehicle capacity weight

(d) Production options weight

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