Operation
Tires and wheels
Uniform Tire Quality Grading
Standards
i For illustration purposes only. Actual data
on tires are specific to each vehicle and
may vary from data shown in above
illustration.
The Uniform Tire Quality Grading is a U.S.
Government requirement designed to give
drivers consistent and reliable information
regarding tire performance. Tire
manufacturers are required to grade tires
based on three performance factors:
treadwear, traction, and temperature
resistance. Although not a Government of
Canada requirement, all tires made for sale in
North America have these grades branded on
the sidewall.
Quality grades can be found, where
applicable, on the tire sidewall between tread
shoulder and maximum section width. For
example:
Treadwear
Traction
Temperature
1
Maximum permissible tire inflation
pressure
200
AA
A
All passenger car tires must conform to
federal safety requirements in addition to
these grades.
i For illustration purposes only. Actual data
on tires are specific to each vehicle and
may vary from data shown in above
illustration.
Treadwear
This is the maximum permissible tire inflation
pressure for the tire.
Always follow the recommended tire inflation
pressure (Y page 253) for proper tire
inflation.
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified
U.S. Government test course. For example, a
tire graded 150 would wear one and one-half
(1
1/2) times as well on the government
course as a tire graded 100.
1
2
3
Treadwear
Traction
Temperature resistance
The relative performance of tires depends
upon the actual conditions of their use,
however, and may depart significantly from
the norm due to variations in driving habits,
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| Categories | Mercedes-Benz E-Class Manuals, Mercedes-Benz Manuals |
|---|---|
| Tags | Mercedes-Benz E300, Mercedes-Benz E320 BlueTec, Mercedes-Benz E350, Mercedes-Benz E63 AMG, Mercedes-Benz W211 |
| Model Year | 2009 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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