Table of Contents > Maintenance > Checking and Maintaining Tires > DOT Tire Quality Grading (U.S. Vehicles)

2023 Honda CR-V Owner's Manual ➜ DOT Tire Quality Grading (U.S. Vehicles)

uuChecking and Maintaining TiresuDOT Tire Quality Grading (U.S. Vehicles)  
DOT Tire Quality Grading (U.S. Vehicles)  
The tires on your vehicle meet all U.S. Federal Safety  
Requirements. All tires are also graded for treadwear, traction,  
and temperature performance according to Department of  
Transportation (DOT) standards. The following explains these  
Uniform Tire Quality Grading  
For example:  
Quality grades can be found where applicable on the tire sidewall  
between tread shoulder and maximum section width.  
Treadwear 200  
Traction AA  
Temperature A  
All passenger car tires must conform  
to Federal Safety Requirements in  
addition to these grades.  
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.  
uuChecking and Maintaining TiresuDOT Tire Quality Grading (U.S. Vehicles)  
Warning: The traction grade  
The traction grades, from highest to lowest, are AA, A, B, and C.  
Those grades represent the tire's ability to stop on wet pavement  
as measured under controlled conditions on specified  
government test surfaces of asphalt and concrete. A tire marked  
C may have poor traction performance.  
assigned to this tire is based on  
straight-ahead braking traction tests,  
and does not include acceleration,  
cornering, hydroplaning, or peak  
traction characteristics.  
Warning: The temperature grade for  
this tire is established for a tire that is  
properly inflated and not  
overloaded. Excessive speed,  
underinflation, or excessive loading,  
either separately or in combination,  
can cause heat buildup and possible  
tire failure.  
The temperature grades are A (the highest), B, and C,  
representing the tire's resistance to the generation of heat and its  
ability to dissipate heat when tested under controlled conditions  
on a specified indoor laboratory test wheel. Sustained high  
temperature can cause the material of the tire to degenerate and  
reduce tire life, and excessive temperature can lead to sudden tire  
failure. The grade C corresponds to a level of performance which  
all passenger car tires must meet under the Federal Motor Vehicle  
Safety Standard No. 109. Grades B and A represent higher levels  
of performance on the laboratory test wheel than the minimum  
required by law.