Enter the four-digit DOT date code from your tire sidewall, for example 2319, to see the manufacture week, the tire age, and a replace-or-inspect note.
About the tire DOT date decoder
The tire DOT date decoder turns the four-digit date code on your tire's sidewall into a plain answer: when the tire was made and how old it is now. Every tire sold in the United States carries a DOT tire identification number, and the last four digits are the manufacture date. The first two digits are the week of the year, and the last two are the year. Enter those four digits, such as 2319, and the tool shows week 23 of 2019, an approximate manufacture date, the tire's age in years, and a short note on whether the tire is within its usual service window or worth inspecting or replacing.
This is an educational estimate from the printed code, not professional, mechanical, or safety advice. Tire condition depends on storage, load, heat, and use, not calendar age alone, so a date is only one signal. The tool reads modern four-digit codes, used on tires made in 2000 or later; a three-digit code means a pre-2000 tire that is well past its service life. The tool runs entirely in your browser. It stores no VIN, license plate, location, photos, contact details, or vehicle account data, and the digits you enter are used only to compute a local result and are never sent anywhere.
How to use
- Find the DOT code on the tire sidewall. It starts with the letters DOT, followed by a string of numbers and letters.
- Read the last four digits of that code. They are the manufacture date.
- Type those four digits into the box, for example 2319.
- Read the result: the manufacture week and year, an approximate date, and the tire age.
- Use the replace-or-inspect note as a starting point, and have older or damaged tires checked by a professional.
Worked examples
2319: week 23 of 2019
A code ending in 2319 means the tire was made in the 23rd week of 2019, roughly early June 2019.
Older tire: inspect or replace
Once a tire passes about six years, many tire makers suggest a professional inspection, and at ten years they suggest replacement regardless of remaining tread.
Three-digit code: pre-2000 tire
A three-digit date code is from a tire made before 2000. Tires that old are well beyond their service life and should be replaced.
Frequently asked questions
- Where is the DOT date code on a tire?
- It is part of the DOT tire identification number molded into the sidewall. The number starts with DOT, and the last four digits are the manufacture date: the first two are the week of the year and the last two are the year. Some tires show the full code on only one side, so check both sidewalls if you do not see it.
- How do I read a code like 2319?
- Split it into two pairs. The first pair, 23, is the week of the year, so the 23rd week. The second pair, 19, is the year, 2019 for modern four-digit codes. So 2319 means the tire was made in the 23rd week of 2019, around early June 2019.
- How old does a tire have to be before I replace it?
- There is no single rule, because tire life depends on storage, load, heat, and use, not age alone. As general guidance, many tire makers suggest a professional inspection once a tire is about six years old and replacement by about ten years regardless of tread. This tool gives an age estimate; a qualified tire professional should make the call on a specific tire.
- What if my code is only three digits?
- A three-digit date code was used on tires made before 2000. The decade is ambiguous, and any tire that old is far beyond its service life, so the tool does not estimate a date for it and instead advises replacing the tire.
- Is this professional or safety advice?
- No. This is a free educational estimate based on the printed date code. It is not professional, mechanical, or safety advice. Age is only one factor in tire condition. Have older, cracked, or damaged tires inspected by a qualified professional.
- Does it store the code or anything about my vehicle?
- No. The decoder runs entirely in your browser. The four digits you enter are used only to compute a local result. Nothing is stored or sent to a server, and no VIN, license plate, location, photos, contact details, or vehicle account data is collected.
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