See also:

Outside the United States and Canada
Government regulations in the United States and Canada require that automobiles meet specific emission regulations and safety standards. Therefore, vehicles built for use in the United States, i ...

Uniform Tire Quality Grading System (UTQGS)
This information relates to the tire grading system developed by the U.S. National Highway Traffic Safety Administration for grading tires by tread wear, traction, and temperature performance. ...

Tire Maintenance
Improper or inadequate vehicle maintenance can cause tires to wear abnormally. Here are some important maintenance points: Tire Inflation Pressure Inspect all tire pressure monthly (including the ...