See also:

Tire designations
Information on the sidewall Federal law mandates that tire manufacturers place standardized information on the sidewall of all tires (see the illustration). The following information is listed ...

Uniform Tire Quality Grading
Quality grading information ALL PASSENGER VEHICLE TIRES MUST CONFORM TO FEDERAL SAFETY REQUIREMENTS IN ADDITION TO THESE GRADES Quality grades can be found, where applicable, on the tire sid ...

Selecting a magnetic zone
Magnetic zones. The earth is divided into 15 magnetic zones. The correct zone must be selected for the compass to work correctly. 1. Put the ignition in mode II. 2. Using a pen or similar obje ...