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. About Your Seat Belts
Seat belts are the single most effective safety device because they keep you
connected to the vehicle so that you can take advantage of many built-in safety
features. They also help keep you from being thrown against the inside of the
vehicle, against other passengers, or out of the vehicle. When ...