1 Tire size 2 DOT and Tire Identification Number (TIN) 3 Uniform tire quality grading For details, see “Uniform Tire Quality Grading” that follows. 4 Location of treadwear indicators 5 Tire ply composition and materials Plies are layers of rubber-coated parallel cords. Cords are the strands which form the plies in a tire. 6 Radial tires or bias-ply tires A radial tire has “RADIAL” on the sidewall. A tire not marked “RADIAL” is a bias-ply tire. 7 TUBELESS or TUBE TYPE A tubeless tire does not have a tube and air is directly put into the tire. A tube type tire has a tube inside the tire and the tube maintains the air pressure. 8 Load limit at maximum cold tire inflation pressure 9 Maximum cold tire inflation pressure This means the pressure to which a tire may be inflated. 10 Summer tires or all season tires An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a summer tire.
11 “TEMPORARY USE ONLY” A compact spare tire is identified by the phrase “TEMPORARY USE ONLY” molded on its sidewall. This tire is designed for temporary emergency use only.
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Test yourself
A quick Toyota Corolla quiz: every answer comes with an explanation and a link to the manual page.
