---
title: "Tire Age"
description: "Every tire states its birthday on the sidewall: the last four digits of the DOT code are the week and year it was made. Type them and get the date, the age, and where it sits against the six-to-ten-year replacement guidance."
url: "https://baronauto1.com/tire-age/"
type: "tool"
modified: "2026-09-02"
site: "Baron Auto"
disclaimer: "This site is under new ownership and is not affiliated with Baron Auto Emporium dealership."
---

# Tire Age

> Every tire states its birthday on the sidewall: the last four digits of the DOT code are the week and year it was made. Type them and get the date, the age, and where it sits against the six-to-ten-year replacement guidance.

## What this tool does

The federal Tire Identification Number ends in a date: two digits for the week, two for the year, fixed by 49 CFR 574.5. Type the four digits from the sidewall — or paste the whole DOT code — and the page reads back when the tire was made, how old it is today, and where that sits against the replacement guidance: vehicle and tire makers advise replacement at six to ten years old regardless of treadwear, because rubber ages whether or not it wears.

## Reading it on the car

The full code may appear on only one sidewall, so check the inner face too — and read all four tires plus the spare, because mismatched years tell a story about how the car was kept. A three-digit date code means a tire from before the year two thousand, which settles the age question by itself.

## Limits worth knowing

Age is one axis; condition, tread depth and even wear are the others, and none of them shows a tire's internal state. The guide behind this tool covers what ageing does that looking cannot detect — this page runs entirely in your browser and sends nothing anywhere.

---

*This site is under new ownership and is not affiliated with Baron Auto Emporium dealership.*

Canonical source: https://baronauto1.com/tire-age/