Tires
Tire sidewall designations
The following information can be found on a tire's sidewall.
Uniform Tire Quality Grading
ALL PASSENGER VEHICLE TIRES MUST CONFORM TO FEDERAL SAFETY REQUIREMENTS IN ADDITION TO THESE GRADES.
Tire terminology
The following is a glossary of tire-related terms.
Tire direction of rotation
Tires with tread designed to roll in only one direction are marked with an arrow on the sidewall.
Tread wear indicator
The tread wear indicator shows the status of the tire's tread.