Department Of Transportation Uniform Tire Quality Grades
The following tire grading categories were established by the National Highway Traffic Safety Administration. The specific grade rating assigned by the tire’s manufacturer in each category is shown on the sidewall of the tires on your vehicle.
All passenger car tires must conform to Federal safety requirements in addition to these grades.
See also:
Infants And Child Restraints
Safety experts recommend that children ride rearwardfacing
in the vehicle until they are two years old or until
they reach either the height or weight limit of their rear
facing child safety sea ...
Traction Grades
The Traction grades, from highest to lowest, are AA, A, B,
and C. These grades represent the tire’s ability to stop on
wet pavement, as measured under controlled conditions
on specified govern ...
Older Children And Child Restraints
Children who are two years old or who have outgrown
their rear-facing convertible child seat can ride forwardfacing
in the vehicle. Forward-facing child seats and
convertible child seats used in ...