1998 Ford Contour Owner's Manual - Page 154

1998 Ford Contour Manual

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Maintenance and care Temperature A B C The temperature grades are A (the highest), B, and C, representing the tire's resistance to the generation of 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 excess temperature can lead to sudden tire failure. The grade C corresponds to a level of performance which all passenger cars 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. The temperature grade for this tire is established for a tire that is properly inflated and not overloaded. Excessive speed, underinflation, or excessive loading can cause heat buildup and possible tire failure. 154

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Maintenance and care
154
Temperature A B C
The temperature grades are A (the
highest), B, and C, representing
the tire’s resistance to the
generation of 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
excess temperature can lead to
sudden tire failure. The grade C
corresponds to a level of
performance which all passenger
cars 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.
The temperature grade for
this tire is established for a
tire that is properly inflated and
not overloaded.
Excessive speed,
underinflation, or excessive
loading can cause heat buildup
and possible tire failure.