Where is the DOT date code on a tire?

On one sidewall, at the end of the DOT code. The last four digits indicate the build week and year (WWYY). Example: 2319 = week 23 of 2019.

How old is too old for a tire?

Many manufacturers recommend inspection around 6 years in service and replacement by 10 years from the date of manufacture, even if tread remains. Always follow the maker’s guidance.

What if my tire shows a 3-digit code?

Three-digit codes indicate pre-2000 production. These tires are well beyond typical service life and should be replaced immediately.

Does storage affect tire aging?

Yes. Heat, sunlight, and low inflation accelerate aging. Proper storage and regular inspections help, but time-related degradation still occurs.

Tire Age / DOT Date Checker

DOT “Born-On” Date Decoder

Enter the DOT code from your sidewall. We’ll locate the four-digit date (WWYY = week/year), calculate age, and advise if the tire is nearing the 6–10 year replacement window.

DOT code (full or last 4 digits)

Please enter a valid 4-digit date code (week 01–53, year 00–99). Pre-2000 3-digit codes are supported but considered end-of-life.

Where to look: The full DOT code appears on one sidewall only. The last 4 digits are the date — for example, 2319 means week 23 of 2019.

Result

Manufacture date

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Current age

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Safety guidance

Enter a code to see guidance.

Important: Rubber degrades with time, heat, and storage conditions. Many manufacturers suggest inspection around 6 years and replacement by 10 years, even if tread remains. Always follow manufacturer guidance and your vehicle placard.

Questions? Contact a fitment specialist · Shop tires: Buy_Tires · Payment options: Financing · More guides: Tech Information

Key Takeaways

Find the last 4 digits. They show week and year the tire was made (WWYY).
Time matters. Many makers advise inspection near 6 years and replacement by 10 years, regardless of tread.
Storage & heat accelerate aging. Sun, heat, and low inflation shorten tire life.
Pre-2000 codes. A 3-digit code indicates 1990s or earlier — these are past service life.

Next Steps

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Reviewed by the Performance Plus Tire Fitment Team

This tool provides general guidance. Always follow your vehicle placard and the tire manufacturer’s recommendations, and inspect tires annually after five years in service.