Snow Tires; Tread Wear, Traction and Temperature; Information on Temporary Tires- Page 571

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 speci

fi

ed

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

speci

fi

ed 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 speci

fi

ed

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.

▼

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.)

8-25

Mazda3_8JM2-EA

-

20H_Edition1_new

2020-7-10 17:21:34