See also:

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. ...

Emission Control System
Your vehicle is equipped with an emission control system (the catalytic converter is part of this system) that enables your vehicle to comply with existing exhaust emissions requirements. WARNING ...

Registering Your Vehicle in A Foreign Country (Except United States and Canada)
Government regulations in your country could require that automobiles meet specific emission and safety standards. Vehicles built for your country may differ from those built for other countries. ...