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:
Air conditioner button
The air conditioner operates only when the engine is running.
Press the air conditioner button while the fan is in operation to turn on the
air conditioner. The indicator light will illuminate.
...
Uniform tire quality grading standards
This information indicates the relative performance of passenger car tires in
the area of treadwear, traction, and temperature resistance. This is to aid the
consumer in making an informed choice ...
Expectant mothers
Expectant mothers also need to use the seatbelts. They should consult their doctor
for specific recommendations. The lap belt should be worn securely and as low as
possible over the hips, not ov ...