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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 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, cornering, hydroplaning,
or peak traction characteristics.
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 dissipate 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. The
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 laboratory test wheel than the
minimum required by law.
Warning
:
The temperature grade for this tire
is established for a tire that is properly inflated
and not overloaded. Excessive speed,
underinflation, or excessive loading, either
separately or in combination, can cause heat
buildup and possible tire failure.
5-81
Содержание 2008 Tahoe
Страница 98: ... NOTES 1 94 ...
Страница 174: ... NOTES 2 76 ...
Страница 177: ... NOTES 3 3 ...
Страница 178: ...Instrument Panel Overview United States version shown Canada similar 3 4 ...
Страница 364: ... NOTES 4 64 ...
Страница 506: ...Engine Drive Belt Routing If your vehicle is a Two mode Hybrid see the Two mode Hybrid manual for more information 6 16 ...
Страница 508: ...Maintenance Record cont d Date Odometer Reading Serviced By Maintenance I or Maintenance II Services Performed 6 18 ...
Страница 509: ...Maintenance Record cont d Date Odometer Reading Serviced By Maintenance I or Maintenance II Services Performed 6 19 ...
Страница 510: ...Maintenance Record cont d Date Odometer Reading Serviced By Maintenance I or Maintenance II Services Performed 6 20 ...
Страница 528: ... NOTES 7 18 ...