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. Customer Service Information
Honda dealership personnel are trained professionals who should be able to
deal
with any problems you may encounter with your vehicle. If, however, you are
faced
with a problem that they cannot resolve to your satisfaction, contact Honda
Customer Services.
U.S. Owners
American Honda Motor C ...