Owner's Manual
Page 274
... Traffic Safety Administration which grades tires by treadwear, traction and temperature performance. (This applies only to vehicles sold in road characteristics and climate. A, 9, C The traction grades, from the norm due to variations in driving habits, service practices and differences in the United States...For example, a tire graded would wear one and a half 150 (1-1/2) times as well on the government course as measured under controlled conditions on wet pavement as a tire graded The relative 100. They represent are: the tire's abilityto stop on a specified government test course.
... Traffic Safety Administration which grades tires by treadwear, traction and temperature performance. (This applies only to vehicles sold in road characteristics and climate. A, 9, C The traction grades, from the norm due to variations in driving habits, service practices and differences in the United States...For example, a tire graded would wear one and a half 150 (1-1/2) times as well on the government course as measured under controlled conditions on wet pavement as a tire graded The relative 100. They represent are: the tire's abilityto stop on a specified government test course.