DOT Date Code Checker — How Old Are My Tyres?
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In short
The last four digits of the DOT code are week and year of manufacture — 2419 = week 24 of 2019. Most makers advise replacement at 10 years regardless of tread.
Finding the DOT code
Every tyre carries a DOT marking ending in a four-digit date code: week + year of manufacture. 2419 means week 24 of 2019. The full code appears on at least one sidewall — you may need to check the inner side.
How old is too old?
| Age | Guidance |
|---|---|
| 0–5 years | Fine with normal inspection |
| 5–10 years | Have them inspected annually; watch for sidewall cracking |
| 10+ years | Replace regardless of tread — most manufacturers and safety bodies advise against use |
Caravans, trailers and rarely-driven cars age tyres out long before they wear out. Count the years from the date code, not from when you bought the tyre.
Tyre Owner Essentials
Three-digit codes = pre-2000
A three-digit date code means the tyre was made before 2000 and belongs off the road. If the code is worn away or unreadable on both sidewalls, treat the tyre as of unknown age and have it inspected.
Recommended Accessories
FAQ
How do I read a tyre date code?
Find the DOT marking on the sidewall; the final four digits are week and year of manufacture. 3623 means week 36 of 2023.
Are 6-year-old tyres safe?
Often yes with good tread and no cracking, but have them inspected annually from 5 years. Most manufacturers advise replacement at 10 years regardless of appearance.
Related pages on this site
Last updated:
Data: computed reference values (ETRTO tyre-size arithmetic), build date 22 July 2026. Reference only — always follow your vehicle manufacturer's placard or handbook.