2013 Toyota Corolla Owners Manual - Page 469

6-1. Specifications Tire section names Bead Sidewall Shoulder Tread Belt Inner liner Reinforcing rubber Carcass Rim lines Bead wires Chafer Uniform Tire Quality Grading This information has been prepared in accordance with regulations issued by the National Highway Traffic Safety Administration of the U.S. Department of Transportation. It provides the purchasers and/or prospective purchasers of Toyota vehicles with information on uniform tire quality grading. Your Toyota dealer will help answer any questions you may have as you read this information. 6