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.
Uniform Tire Quality Grading
TractionHonda Civic Owners Manual. Safety Checklist
For the safety of you and your passengers, make a habit of checking these
items
each time before you drive.
After everyone has entered the vehicle, be sure all doors are closed and
locked.
Locking the doors helps prevent an occupant from being ejected and an outsider
from unexpectedly open ...