A. Tire Size
The tire size is a combination of letters and numbers used to define a particular tire's width, height, aspect ratio, construction type, and service description.
B. Department of Transportation (DOT)
The DOT code indicates that the tire is in compliance with U.S. Department of Transportation Motor Vehicle Safety Standards.
C. Tire Identification Number (TIN)
The letters and numbers following the DOT code make up the TIN. The TIN shows the manufacturer and plant code, tire size, and date the tire was manufactured. The TIN is molded onto both sides of the tire, although only one side may have the date of manufacture.
D. Tire Ply Material
The type of cord and number of plies in the sidewall and under the tread.