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How to Check Whether a Tire Was Made in the United States

Use the DOT TIN on the sidewall to identify a tire’s plant, then verify that the plant is in the United States. The final four digits show the tire’s age, not its country of origin.

By CarCody Team 3 min read
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To check whether a tire was made in the United States, find its DOT Tire Identification Number (TIN) on the sidewall, look up the plant code immediately after “DOT” in NHTSA’s Manufacturer Information Database (MID), and verify that the result identifies a U.S. plant. The code is a plant identifier, not a country abbreviation. If the result does not clearly name the country, ask the tire manufacturer to confirm the origin for that tire’s model and complete TIN.

Find the complete DOT number on the tire

The Tire Identification Number is molded into a sidewall and contains production information, including the plant identifier and the week and year of manufacture. NHTSA says every tire has a DOT TIN on its sidewall. The complete marking may not appear on both sides, however, so inspect both sidewalls. If you cannot see it from outside the vehicle, the full code may be on the inward-facing sidewall.

  1. Look for “DOT” followed by letters and numbers molded into the sidewall.
  2. Record the entire sequence, not just the last digits or the characters that seem like a country code.
  3. Check the other sidewall if the full number is not visible. Use a flashlight only to improve visibility; it does not decode the marking. If access is difficult, have a tire professional help.

NHTSA’s 2017 vehicle exercise took an average of 2 minutes and 43 seconds to locate and record all four tires’ TINs; the longest vehicle took 5 minutes and 45 seconds, with the delay attributed to front tires whose full TINs faced inward. Those figures describe that study’s 33 vehicles at NHTSA’s Vehicle Research and Test Center, not a promised time for every car.

Identify the plant code, not the date code

The plant-code group comes directly after “DOT.” Under current rules, new tires use a three-symbol plant code. Older tires may have a two-symbol code: the transition permitted old codes to remain in use through April 13, 2025, and older tires are still in circulation. NHTSA’s lookup accepts both old and new DOT codes.

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Do not confuse the plant code with the final four digits. Those digits give the week and year the tire was made; they do not tell you the country. The plant characters identify a manufacturer and plant, so do not interpret them as a familiar country abbreviation or guess from the characters alone.

Look up the code in NHTSA’s database

  1. Open NHTSA’s Manufacturer Information Database (MID).
  2. Choose Equipment Plants and select the tire equipment type.
  3. Enter the plant-code group immediately after “DOT” in the DOT-code field. The interface says this field applies to both new and old DOT codes.
  4. Review the result for the manufacturer and plant, and check whether it explicitly identifies the country as the United States.

A result that identifies a company or plant without naming its country does not, by itself, establish that the tire was made in the U.S. NHTSA notes that foreign TINs need not include a plant name, and the database lookup should not be treated as proof that every code or historical record will yield a consumer-readable country.

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What to do if the result is unclear

Contact the tire manufacturer and provide the full TIN and exact tire model. Ask for the country of manufacture for that specific tire, rather than relying on a brand-wide statement. A brand’s headquarters, sales markets, or country association does not establish where a particular model was made; a manufacturer may use different plants for different models.

Prefer an official plant lookup or a confirmation from the tire maker over unsourced code lists. When evaluating any answer, check that it applies to the exact plant code and tire, supports both older two-symbol and current three-symbol code formats where relevant, and actually names a country instead of inviting you to infer one.

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Sources and limits of the marking

NHTSA describes the TIN as information about the tire that includes its manufacturer, manufacturing plant, week and year of manufacture, and characteristics such as size and model. The marking is useful for tracing production, but the plant code is not a plain-language country label. NHTSA’s interpretation concerning foreign plant names addresses regulatory reporting; it does not guarantee that every tire maker will publicly confirm a country of manufacture.

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