Owner`s manual

Tubeless or Tube Type: Tires are marked as either “tubeless”

or “tube type,” whichever is applicable, on at least one sidewall.

UNIFORM TIRE QUALITY GRADING

The Uniform Tire Quality Grading (“UTQG”) standards are

intended to assist you in making an informed choice in your pur-

chase of passenger car tires by providing information indicating

relative performance of these tires in the areas of tread wear,

wet braking traction (straight-ahead), and temperature resist-

ance. All passenger car tires must conform to federal safety

requirements in addition to these grades.

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 one half (1 1/2) times as well on the

government course as a tire graded 100. The relative perform-

ance of tires depends upon the actual conditions of their use,

however, and may depart significantly from the norm due to vari-

ation in driving habits, service practices and differences in road

characteristics and climate.

Traction

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 govern-

ment test surfaces of asphalt and concrete. Warning: The trac-

tion grade assigned to a tire is based on straight-ahead braking

traction tests, and does not include acceleration, cornering,

hydroplaning, or peak traction characteristics.

Temperature

The temperature grades are A (the highest), B, and C, repre-

senting the tire’s resistance to the generation of heat and its abil-

ity to dissipate heat when tested under controlled conditions on

a specified indoor laboratory test wheel. Sustained high temper-

ature 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

is established for a tire that is properly inflated and not over-

loaded. Excessive speed, underinflation, or excessive loading,

either separately or in combination, can cause heat buildup and

a possible tire failure.

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