Tire labeling
Overview of tire labeling
1
Uniform Tire Quality Grading Standards
2
DOT (Department of Transportation), (TIN)
Tire Identication Number
3
Maximum tire load (/ page 343)
4
Maximum tire pressure (/ page 343)
5
Manufacturer
6
Tire characteristics (/ page 344)
7
Tire size designation, load-bearing capacity,
speed rating and load index (/ page 344)
8
Tire name
%
The data shown in the illustration is example
data.
Tire Quality Grading
In accordance with the US Department of Trans-
portation's "Uniform tire Quality Grading Stand-
ards", tire manufacturers are required to grade
their tires on the basis of the following three per-
formance factors:
1
Tread wear grade
2
Traction grade
3
Temperature grade
%
The data shown in the illustration is example
data.
%
The classication is not legally stipulated for
Canada, but it is generally stated.
Tread wear grade
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specied govern-
ment test course. For example, a tire graded 150
would wear one and one-half (1\1/2\) times as
Wheels and tires
341
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