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TIRE LABELING
Federal law requires tire manufacturers
to place standardized information on
the sidewall of all tires. This informa-
tion identifies and describes the funda-
mental characteristics of the tire and
also provides the tire identification
number (TIN) for safety standard certifi-
cation. The TIN can be used to identify
the tire in case of a recall.
q
1
Tire size (example: P215/65R15 95H)
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
number gives the width in millime-
ters of the tire from sidewall edge to
sidewall edge.
3. Two-digit number (65): 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 (15): This number
is the wheel or rim diameter in
inches.
6. Two- or three-digit number (95): 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.
SDI1575
Example
SDI1951
Example
8-38
Maintenance and do-it-yourself
w
06.6.26/S50-D/V5.0
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