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Treadwear |
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The treadwear grade of a tire is a comparative rating based on the wear of a tire
when tested carefully under controlled conditions. For example, a tire graded 400
should have its useful tread last twice as long as a tire graded 200. However, a
different tire manufacturer may grade a comparable design as 300, so a grade of 150
would last half as long under their grading scheme.
Therefore, it is not recommended to use one manufacturer's grade versus another,
but instead to compare tire grades within a given brand. Actual treadwear
performance can vary tremendously according to the tire's real-world use. Variations
in driving habits, service practices (especially air pressure maintenance), road
conditions and climate will affect the life of treadwear. |
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