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:
MMT In Gasoline
MMT is a manganese containing metallic additive that is blended into some gasoline
to increase the octane number.
Gasoline blended with MMT offers no performance advantage beyond gasoline of
the ...
Towing This Vehicle Behind Another Vehicle
...
Tire Identification Number (TIN)
The TIN may be found on one or both sides of the tire,
however, the date code may only be on one side. Tires
with white sidewalls will have the full TIN, including the
date code, located on the ...