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:
Recommended grade and viscosity
Each oil manufacturer has its own base
oils and additives. Never use different
brands together. For details, refer to
“Manual transmission, front differential
and rear differential gear oil”. ...
Temperature control dial
This dial regulates the temperature of airflow from the air outlets over a range from the blue side (cool) to red side (warm). ...
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 government t ...