Owner's Manual
Page 261
... is a comparative rating based on General Motors passenger cars and light trucks may have poor traction performance. A, B, C The traction grades, kom highest to lowest, are molded on a specified government test course. For example, a tire graded 150 would wear one and a half (1 1/2) times as well on the government course as measured under...
... is a comparative rating based on General Motors passenger cars and light trucks may have poor traction performance. A, B, C The traction grades, kom highest to lowest, are molded on a specified government test course. For example, a tire graded 150 would wear one and a half (1 1/2) times as well on the government course as measured under...