![]() The first two numbers identify the week and the last number identifies the year of manufacture. Prior to year 2000 three numbers are used for the date of manufacture. The 17 number indicates it was manufactured during 2017. ![]() In the example below (DOT AF WD9E 0517) 05 indicates the tire was manufactured in the 5th week of the year. The first two numbers identify the week and the last two numbers identify the year of manufacture. Starting with the year 2000, four numbers are used for the Date of Manufacture. The letters “DOT” are followed by eight to thirteen letters and/or numbers that identify where the tire was manufactured, tire size and the manufacturer’s code, along with the week and year the tire was manufactured.īelow is a description of the serial number. Tires made in the United States have the DOT serial number located on the inside sidewall near the rim. Department of Transportation (DOT) National Highway Traffic Safety Administration (NHTSA) tire safety standards. The "DOT" symbol certifies the tire manufacturer's compliance with the U.S. But where can you find it and what do the letters and numbers mean? Need to know how old your tire is? The Tire Identification Number (aka the tire’s serial number) gives you all the information you need.
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