2003 Chevrolet Monte Carlo Owner's Manual - Page 300

2003 Chevrolet Monte Carlo Manual

Page 300 highlights

Uniform Tire Quality Grading Quality grades can be found where applicable on the tire sidewall between tread shoulder and maximum section width. For example: Treadwear The treadwear grade is a comparative 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 (1.5) 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, however, and may depart significantly from the norm due to variations in driving habits, service practices and differences in road characteristics and climate. Treadwear 200 Traction AA Temperature A The following information relates to the system developed by the United States National Highway Traffic Safety Administration, which grades tires by treadwear, traction and temperature performance. (This applies only to vehicles sold in the United States.) The grades are molded on the sidewalls of most passenger car tires. TheUniform Tire Quality Grading system does not apply to deep tread, winter-type snow tires, space-saver or temporary use spare tires, tires with nominal rim diameters of 10 to 12 inches (25 to 30 cm), or to some limited-production tires. While the tires available on General Motors passenger cars and light trucks may vary with respect to these grades, they must also conform to federal safety YqLirCKefits gfie g&-ji;iGfiz; Gzfiei'& ;&jtfii-5 Tire Performance Criteria (TPC) standards. Traction - AA, A, B, C The traction grades, from highest to lowest, are AA, A, B, and C. Those grades 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 straight-ahead braking traction tests, and does not include acceleration, cornermg, hydroplaning, or peak traction characteristics. 5-65

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Uniform
Tire
Quality
Grading
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
The
following
information relates to the system
developed
by
the
United States National Highway
Traffic
Safety
Administration, which grades tires by
treadwear,
traction
and temperature performance.
(This
applies
only
to
vehicles sold
in
the United States.)
The
grades
are
molded
on the sidewalls of most
passenger
car
tires.
The Uniform Tire Quality Grading
system
does
not
apply
to deep tread, winter-type
snow tires,
space-saver
or temporary use spare tires,
tires
with
nominal
rim diameters of
10
to
12
inches
(25
to
30
cm),
or to some limited-production tires.
While the tires available on General Motors passenger
cars
and
light
trucks
may
vary
with respect to these
grades,
they
must
also conform to federal safety
Performance Criteria (TPC) standards.
YqLirCKefits
gfie
g&-ji;iGfiz;
Gzfiei'&
;&jtfii-5
Tire
Treadwear
The treadwear grade is a
comparative 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
(1.5)
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,
however, and may depart 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. Those grades 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 straight-ahead braking
traction tests, and does not include acceleration,
cornermg, hydroplaning, or peak traction characteristics.
5-65