HONDA 2013 Civic Coupe User Manual
Page 279
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Checking and Maintaining Tires
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DOT Tire Quality Grading (U.S. Vehicles)
278
Main
tenan
ce
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.
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 cooresponds 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.
■
Traction
■
Temperature
1
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.
1
Warning: The temperature grade for this tire is
established for a tire that is properly inflated and
not overloaded. Excessive speed, underinflation,
underinflation, or excessive loading, either
separately or in combination, can cause heat
buildup and possible tire failure.
13 CIVIC 2D-31TS86100.book 278 ページ ２０１２年１０月２６日 金曜日 午前８時４９分
2013 Civic Coupe
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