Wheels
under contro lled conditions on a specified
government test course.
For example, a tire graded 150 would wear one
and one ha lf (11/2) times as well on the govern-
ment course as a tire graded 100 .
The relative performance of t ires depends upon
the actual conditions of their use, howeve r, and
may depart significant ly from the norm due to
variations in driving habits, service practices and
differences in road characteristics and climate .
Traction
The traction g rades, from highest to lowest, are
AA, A, Band
C. Those grades represent the tire's
ability to stop on wet pavement as measured un -
der contro lled conditions on specified govern-
ment test surfaces of aspha lt and concrete. A tire
marked C may have poor traction performance
¢ & .
Temperature
The temperatu re grades are A (t he 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 mate -
rial of the tire to degenerate and reduce tire life,
and excessive temperature can lead to sudden
tire fa ilure¢
fr:..
The grade C corresponds to a leve l of perform -
ance which a ll passenger car tires must meet un-
der the Federa l Motor Vehicle Safety Standard
No. 109. Grades B and A represent higher leve ls
of performance on the labora to ry test wheel tha n
the mi nimum required by law .
A WARNING
-
The traction grade assigned to this tire is
based on straight-ahead braking traction
t ests, and does not incl ude acceleration, cor-
nering, hydroplaning or peak traction charac-
teristics.
300
A WARNING
The temperature grade for t his tire is estab-
lished for a tire that is properly inflated and
not overloaded. Excessive speed, underinfla-
tion, or excessive loading, either separately or
in comb ination , can caus e heat bu ildup and
possible tir e failure.
A WARNING
-
-
Temperature grades apply to tires that are
properly inflated and not over or un der infl at-
ed .
Tire Pressure Monitoring
System
(AS, S8)
ill General notes
Applies to: AS, 58
Each tire, including the spare (if prov ided),
shou ld be checked monthly when cold and inflat-
ed to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or
tire inflation pressure label.
(If your vehicle has
tires of a different size than the size ind icated on
the ve hicle placard or tire inflat ion pressure la-
bel , you should determ ine the proper tire infla-
tion pressure for those tires).
As an added safety feature, your vehicle has been
equipped with a tire pressure mon itor ing system
(TPMS) that illum inates a low tire pressure tell-
tale when one or more of your tires is significant-
ly unde r-inflated. According ly, when the low tire
pressure telltale illum inat es, you sho uld stop and
check your tires as soon as possible, and inflate
them to the proper pressure . Driving on a signifi -
cant ly under -inflated tire causes the tire to over-
heat and can lead to tire fai lure. Und er-inflation
also reduces fue l eff iciency and tire tread life,
and may affect the vehicle's handling and stop-
ping ability.
Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the dr iver's re-
spons ibility to maintain correct t ire pressure,
even if under-inflation has not reached the level
to trigger illumination of the TPMS low t ire pres-
sure te llt ale . .,.
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