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:
Rocking the vehicle
If you must rock the vehicle to free it from snow, sand, or mud, depress the accelerator pedal slightly and move the shift lever/select lever back and forth between “1”/“D” and “R” repeatedly. Do not ...
Uniform Tire Quality Grading (UTQG)
For details, refer to “Uniform tire quality grading standards”. ...
Wiper operation when snowing
Before driving in cold weather, make sure the wiper blades are not frozen to the windshield or rear window.
If the front wiper blades are frozen to the windshield, use the defroster with the airflow ...