Letter Rating; Speed Rating; Maximum Load Rating- Page 570

95

“95” is the Load Index. This two-or

three-digit number indicates how

much weight each tire can support.

H

“H” is the speed rating. The speed

rating denotes the maximum speed for

which the use of the tire is rated.

Letter Rating

Speed Rating

Q

99 mph

R

106 mph

S

112 mph

T

118 mph

U

124 mph

H

130 mph

V

149 mph

W

168

*

 mph

Y

186

*

 mph

*

 For tires with a maximum speed capability over

149 mph, tire manufacturers sometimes use the
letters ZR. For tires with a maximum speed
capability over 186 mph, tire manufacturers
always use the letters ZR.

M+S or M/S

:

 Mud and Snow

AT

:

 All Terrain.

AS

:

 All Season. The “M+S” or “M/S”

indicates that the tire has some

functional use in mud and snow.

U.S. DOT Tire Identi

fi

cation Number

(TIN)

This begins with the letters “DOT”

which indicates the tire meets all

federal standards. The next two

numbers or letters are the plant code

where it was manufactured, and the

last four numbers represent the week

and year the tire was manufactured.

For example, the numbers 457 means

the 45st week of 1997. After 2000 the

numbers go to four digits. For

example, the number 2102 means the

21th week of 2002. The other

numbers are marketing codes used at

the manufacturer's discretion. This

information is used to contact

consumers if a tire defect requires a

recall.

Tire Ply Composition and Materials

Used

The number of plies indicates the

number of layers of rubber-coated

fabric in the tire. In general, the greater

the number of plies, the more weight a

tire can support. Tire manufacturers

also must indicate the tire materials,

which include steel, nylon, polyester,

and other.

Maximum Load Rating

This number indicates the maximum

load in kilograms and pounds that can

be carried by the tire.

Maximum Permissible In

fl

ation

Pressure

This number is the greatest amount of

air pressure that should ever be put in

the tire under normal driving

conditions.

Customer Information and Reporting Safety Defects

Tire Information (U.S.A.)

8-24

Mazda3_8JM2-EA

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