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13-2 Consumer information and Reporting safety defects
Consumer i nformation and Rep orting safety defects
For U.S.A.
The following information has been com-
piled according to Code of Federal Regu-
lations #Title 49, Part 575$.
Tire information
Tire labeling
Many markings (e.g. Tire size, Tire
Identification Number or TIN) are
placed on the sidewall of a tire by tire
manufacturers. These marking can
provide you with useful information on
the tire.
Tire size
Your vehicle comes equipped with P-
Metric tire size. It is important to un-
derstand the sizing system in select-
ing the proper tire for your vehicles.
Here is a brief review of the tire sizing
system with a breakdown of its indi-
vidual elements.
P Metric
With the P-Metric system, Section
Width is measured in millimeters. To
convert millimeters into inches, divide
by 25.4. The Aspect Ratio (Section
Height divided by Section Width)
helps provide more dimensional infor-
mation about the tire size.
Example:
(1) P = Certain tire type used on light
duty vehicles such as passenger cars
(2) Section Width in millimeters
(3) Aspect Ratio (= section height
section width).
(4) R = Radial Construction
(5) Rim diameter in inches
Load and Speed Rating Descrip-
tions
The load and speed rating descrip-
tions will appear following the size
designation.
They provide two important facts
about the tire. First, the number des-
ignation is its load index. Second, the
letter designation indicates the tire"s
speed rating.
Example:
(6) Load Index: A numerical code
P 205 / 55 R 16
(1)
(2)
(3) (4) (5)
P 205 / 55 R 16 89 V
Size designation
(6) (7)
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