Snow Tires; Tread Wear, Traction and Temperature; Information on Temporary Tires- Page 551

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.

▼

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_8HE9-EA-18K_Edition3

2018-11-21 14:31:58