Letter Rating; Speed Rating; Maximum Load Rating- Page 550

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 Identification 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 Inflation
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.)

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Mazda3_8HE9-EA-18K_Edition3

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