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TIRE LABELING
Federal law requires tire manufacturers
to place standardized information on the
sidewall of all tires. This information
identifies and describes the fundamen-
tal characteristics of the tire and also
provides the tire identification number
(TIN) for safety standard certification.
The TIN can be used to identify the tire in
case of a recall.
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Tire size (example: P215/60R16 94H)
1.
P: The “P” indicates the tire is de-
signed for passenger vehicles. (Not all
tires have this information.)
2.
Three-digit number (215): This num-
ber gives the width in millimeters of
the tire from sidewall edge to side-
wall edge.
3.
Two-digit number (60): This number,
known as the aspect ratio, gives the
tire’s ratio of height to width.
4.
R: The “R” stands for radial.
5.
Two-digit number (16): This number is
the wheel or rim diameter in inches.
6.
Two- or three-digit number (94): This
number is the tire’s load index. It is a
measurement of how much weight
each tire can support. You may not
find this information on all tires be-
cause it is not required by law.
7.
H: Tire speed rating. You should not
drive the vehicle faster than the tire
speed rating.
Example
SDI1575
Example
SDI1606
Maintenance and do-it-yourself
8-29
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04/06/09—tbrooks
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