240
Car care and technical information
Tire Sidewall Labeling
Useful information about a tire is molded
into it´s sidewall.
Tire size: The tire size ia a combination of
letters and numbers used to define a partic-
ular tire´s width, height, aspect ratio, con-
struction type and service description.
Department of Transportation (DOT):
The Department of Transportation (DOT)
code indicates that the tire is in compliance
with the U.S. Department of Transportation
Motor Vehicle Safety standards.
Tire Identification Number (TIN): The let-
ters and numbers following DOT code are
the Tire Identification Number (TIN). The
TIN shows the manufacturer and plant
code, tire size, and date the tire was manu-
factured. The TIN is molded onto both sides
of the tire.
Tire Ply Material: The type of cord and
number of plies in the sidewall and under
the tread.
Uniform Tire Quality Grading (UTQG):
Tire manufacturers are required to grade
tires based on performance factors: tread-
wear, traction and temperature resistance.
For more information see “Uniform Tire
Quality Grading” on page 237.
Maximum Cold Inflation Load Limit: Max-
imum load that can be carried and the max-
imum pressure needed to support that load.
For information on recommended tire pres-
sure see “Lowest recommended tire pres-
sure, cold tires” on page 279and “Loading
Your Vehicle” on page 242.
Tire Size
The following illustration shows an example
of a typical passenger car tire size.
Passenger (P-Metric) Tire: The United
States version of a metric tire sizing system.
The letter “P” as the first character in the tire
size means a passenger vehicle tire engi-
neered to standards set by the U.S Tire and
Rim Association.
Tire Width: The three-digit number indi-
cates the tire section width in millimeters
from sidewall to sidewall.
P
215 /
55
R
16
93
H
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a
b
c
d
e
f
g
a Passenger (P-Metric) Tire
b Tire Width
c Aspect Ratio
d Belt Rating
e Rim diameter
f Load range
g Speed rating
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