Treadwear
The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified 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. 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, service practices and differences in road characteristics and climate.
See also:
Windshield washer fluid warning light
This light illuminates when the fluid level in the windshield washer fluid tank
decreases to the lower limit (approximately 0.6 US qt, 0.6 liter, 0.5 Imp qt). ...
Traction AA, A, B, C
The traction grades, from highest to
lowest, are AA, A, B and C. Those
grades represent the tire’s ability to
stop on wet pavement as measured
under controlled conditions on specified governme ...
SI-DRIVE (STI)
SI-DRIVE (SUBARU Intelligent Drive) works to maximize engine performance, control and efficiency.
This system consists of three modes:
Intelligent (I), Sport (S), and Sport Sharp (S#). By adjusting ...