Snow Tires; Tread Wear, Traction and Temperature; Information on Temporary Tires- Page 554

Tread Wear, Traction and Temperature
Grades

Tread wear:

 The tread wear 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.

Traction:

 The traction grades, from

highest to lowest are AA, A, B, and C.
The 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.

Temperature:

 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.

Snow Tires

In some heavy snow areas, local
governments may require true snow
tires, those with very deeply cut tread.
These tires should only be used in pairs
or placed on all four wheels. Make
sure you purchase snow tires that are
the same size and construction type as
the other tires on your vehicle.

SAFETY WARNING

The following safety warning appears
on the tire's sidewall.
SERIOUS INJURY MAY RESULT FROM:



EXPLOSION OF TIRE/RIM ASSEMBLY
DUE TO IMPROPER
MOUNTING-MATCH TIRE
DIAMETER TO RIM DIAMETER;
NEVER EXCEED 40 psi (275 kPa) TO
SEAT BEADS-ONLY SPECIALLY
TRAINED PERSONS SHOULD
MOUNT TIRES.



TIRE FAILURE DUE TO
UNDER-INFLATION/
OVERLOADING/DAMAGE-FOLLOW
OWNER'S MANUAL AND PLACARD
IN VEHICLE-FREQUENTLY CHECK
INFLATION PRESSURE AND INSPECT
FOR DAMAGE.

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Information on Temporary Tires

Please refer to the sample below.

1. Temporary tires
2. Nominal width of tire in millimeters
3. Ratio of height to width (aspect

ratio)

4. Diagonal
5. Rim diameter code
6. Load index & speed symbol
 

Customer Information and Reporting Safety Defects

Tire Information (U.S.A.)

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2020-7-22 15:50:09