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DOT Serial Number
The DOT symbol certifies the tire manufacturer’s compliance with the U.S. Department of Transportation tire safety standards. The DOT serial number is located on the lower sidewall of the tire, on one side only. Below is a description of the serial number. Starting in the year 2000, four numbers are used for the Date of Manufacture, first two numbers identify the week and the last two numbers identify the year of manufacture. Prior to year 2000, three numbers are used for the Date of Manufacture, first two numbers identify the week and the last number identifies the year of manufacture. To identify tires manufactured in the 90s, a decade symbol (a triangle on its side) is located at the end of the DOT serial number.
For Example: DOT NJ HR 2AE2 529
529 = Date of Manufacturer, example: 529
2AE2 = Tire Type Code (coding for type of tire optional by manufacturer).
HR = Tire Size Code Number.
NJ = Manufacturer’s Plant Identification Code.
DOT = Reference Symbol (certifies the tire manufacturer’s compliance with