The DOT # (Department of Transportation number) is a code printed on every tire. It tells you when the tire was made, where it was made, and confirms that it meets U.S. safety standards.
Think of it as the tire’s birth certificate + safety stamp.
The last four digits of the DOT number show the week and year the tire was manufactured.
Example:
DOT XXXX XXXX 2319
This means the tire was made in the 23rd week of 2019.
Why it matters:
Tires older than 6 years begin to lose strength
Rubber dries out over time
Older tires can fail even if the tread looks good
Helps prevent blowouts and unsafe driving
Manufacturers use the DOT number to verify:
When the tire was made
Whether it qualifies for warranty coverage
Whether it’s part of a recall
No DOT number = no warranty support.
The DOT number confirms:
The tire meets federal safety standards
It came from a certified factory
It’s not counterfeit or illegally imported
This protects customers from unsafe or fake tires.
For shops like Amigo Tire Shop, the DOT number helps you:
Verify tire age before installation
Protect customers from old inventory
Document repairs and replacements
Provide accurate warranty service
It’s a simple number that carries big responsibility.
Always check the DOT number before buying a tire.
It tells you the tire’s age, safety status, and warranty eligibility.
Your safety starts with knowing what’s on your wheels.