Bead
A
Sidewall
B
Shoulder
C
Tread
D
Belt
E
Inner liner
F
Reinforcing rubber
G
Carcass
H
Rim lines
I
Bead wires
J
Chafer
K
Uniform Tire Quality
Grading
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.
Your Toyota 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
9-1. Specifications
on the tire sidewall between
tread shoulder and maximum
section width.
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.
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 dif-
fer significantly from the norm due
to variations in driving habits, ser-
vice practices and differences in
road characteristics and climate.
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.
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 corner-
ing (turning) traction.
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9