Tyre DOT Decoder
The US Department of Transportation established a requirement in January 1971 for a tire identification number (TIN)
that must be labeled on one sidewall of each tire that is newly manufactured or retreaded. (to be sold in the U.S market)
The length of the TIN was standardized to 13 symbols for new tires and 7 symbols for retreaded tires in April 2015.
Locate the DOT code
If you cannot find the text "DOT" at the sidewall, it will be located on the inside sidewall. The first two digits of the TIN indicate the manufacturer’s plant code, while the remaining digits indicate the tire size and date of manufacture.
Check the manufacturing date
The last four digits represent the week and year of manufacture. For example, '2319' means the 23rd week of 2019.
Even though the code is mandated by the US Department of transport, it is used worldwide.
Therefore the DOT code applies to all tires manufacturered for use on public roads, regardless
of the market they are sold in. If the DOT code is not imprinted on the sidewall, it does not mean the tire is not authorized to be sold or a counterfeited product.
It just mean the batch of tire is not sold to the market that requires the DOT by law.
The list is for reference. Please refer to the U.S. Department of Transport for the latest update on the tyre DOT, especially on the status of the plant.
Find answers for commonly asked questions at the bottom of the page, or click here to direct.