9-1. Specifications
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Uniform tire quality grading For details, see“ Uniform Tire Quality Grading” that follows.
Typical DOT and Tire Identification Number( TIN)
Section width( millimeters)
DOT symbol * Tire Identification Number( TIN) Tire manufacturer’ s identification mark Manufacturer’ s code Manufacturing week Manufacturing year *: The DOT symbol certifies that the
tire conforms to applicable Federal Motor Vehicle Safety Standards.
Aspect ratio( tire height to section width) Tire construction code( R = Radial, D = Diagonal) Wheel diameter( inches) Load index( 2 digits or 3 digits) Speed symbol( alphabet with one letter)
■ Tire dimensions
9
Tire size
■ Typical tire size information
The illustration indicates typical tire size.
Section width Tire height Wheel diameter
Vehicle specifications