How to Tell What Year a Tire Was Manufactured: DOT Guide

You can tell what year a tire was manufactured by checking the DOT code on the sidewall. Look for the last four digits after the DOT mark: the first two show the week, and the last two show the year. For example, 2319 means the 23rd week of 2019. If you see only three digits, the tire was made before 2000 and should be replaced. The DOT code also reveals more about the tire’s age and build.

Key Takeaways

• Find the DOT code on the tire sidewall; the last four digits show the manufacture date on tires made after 2000.
• Read the first two of those digits as the production week and the last two as the production year.
• Example: 2319 means the tire was made in the 23rd week of 2019.
• If the DOT date code has only three digits, the tire was made before January 2000 and should be replaced.
• Even with a valid date code, inspect tire age and condition; tires six years or older often need replacement.

Where Is the Tire Date Code?

You’ll find the tire date code on the sidewall, right after the “DOT” marking. This Tire Date Code is part of the DOT Code, and it tells you when the tire manufacturer made the tire. Check the sidewall closely, because only one side usually shows it. If you don’t see it, inspect the other sidewall before you assume it’s missing.

For tires manufactured since 2000, the last four digits matter most. The first two digits show the week, and the last two digits show the year. That lets you judge tire age fast and keep control of your safety decisions. A three-digit code means the tire was manufactured before January 2000, and you should replace it.

Don’t forget that tire performance can be significantly influenced by the age of the tire.

Don’t let worn information keep you guessing. Read the code, verify the year, and act on what the sidewall says.

What Does the DOT Code Mean?

The DOT code is the tire’s identification stamp, and it can contain up to 13 characters on the sidewall. You use it as the tire identification number to gauge age and safety. On tires made after 2000, the last four digits show the week and year manufactured. The first two digits mark the week, and the last two digits mark the year. For example, a code ending in 2910 means the tire was manufactured in the 29th week of 2010. Older tires, made before January 2000, use a three-digit code, so you don’t get the same date detail. Check the code even if tread depth still looks acceptable, because age can still demand replacement. For your safety, treat tires older than six years as candidates to replace. The DOT code gives you the facts you need to decide without guesswork. Additionally, understanding the importance of all-season tires can further enhance your safety and performance on the road.

How Do You Read the Last Four Digits?

To read the last four digits, split them into two parts: the first two digits show the week of manufacture, and the last two show the year. On your tire, find the DOT date code on one sidewall; it’s usually molded into the rubber for quick inspection. If you see 2319, the tire was manufactured in the 23rd week of 2019. That means the tire’s age is clear without guesswork, and you can judge whether its performance still meets your needs. Tires made after January 2000 use this four-digit format. Older tires usually carry a three-digit code, so a four-digit ending confirms a modern date code. Check it before you buy, mount, or keep using a tire, because age can weaken materials and reduce safety. Reading the last four digits gives you direct, practical control over tire condition, especially when considering all-season tire performance in various driving conditions.

How Do You Read 7- to 13-Character TINs?

Once you’ve read the date code, look at the full Tire Identification Number, or TIN, that follows the DOT marking on the sidewall. You’ll see a 7- to 13-character code that tells you where and when the tire was manufactured. In a 7- to 12-character TIN, the first two characters give you the plant code, and the next one to two characters identify tire size. The last four digits show the week of the year and the year of manufacture, so you can read the tire date fast. A TIN ending in 1319 means the tire was made in week 13 of 2019. In a 13-character TIN, the first three characters are the plant code, six more describe size and type, and the last four digits still mark the production date. Use the TIN to verify tires manufactured after April 13, 2025, meet the newer format. Understanding treadwear ratings can also assist in assessing the longevity of your tires.

When Should You Replace Tires by Age?

Even if your tread looks fine, you should replace tires by age because rubber degrades over time. Check the tire identification number and read the last four digits to find the tire manufacture date: the week and year it left the mold. Use that date to track tire age, then replace tires by age at six years, even if load capacity and tread still look serviceable.

You need regular visual inspections for cracking and bulging, dry rot, and uneven wear. Manufacturers often call for a thorough inspection at six years and replacement after 10 years. For tire safety, don’t trust appearance alone; aging can hide internal damage. Keep records, verify the DOT code, and free yourself from avoidable failure. Additionally, consider that winter tires have specific age recommendations to ensure optimal performance in severe conditions.

Frequently Asked Questions

Does the Dot Code Tell Me the Tire’s Age?

Yes, the DOT code tells you your tire’s age by showing the manufacture week and year. Use it in your tire safety checks, tire pressure monitoring, and tread depth measurement to spot tire replacement signs. It also helps with tire maintenance tips, seasonal tire storage, tire performance factors, tire buying guide, tire warranty details, and tire recycling options. If the code’s old, replace the tire.

How Old Are My Tires by Dot Number?

Your tires’ age is the last four DOT digits: the first two show the week, the last two the year. So 1319 means week 13 of 2019. That tells you tire lifespan for tire safety. Check tread depth, tire pressure, tire rotation, tire maintenance, seasonal tires, all season tires, tire warranty, and tire replacement. If they’re over six years old, inspect them now.

How to Read Dot Manufacture Date on Tires?

Read the last four digits of the DOT code on your tire’s sidewall: the first two show the week, and the last two show the year. So 2910 means the 29th week of 2010. If you see only three digits, it’s pre-2000 and you should replace it. This supports tire safety, tire maintenance, tire lifespan, tire performance, tire inspections, tire storage, DOT regulations, manufacturing standards, industry recommendations, and tire replacement.

How Long Are Tires Good for After the DOT Date?

Tires usually stay safe for about six years after the DOT date; think of rubber like bread—it stiffens fast in bad conditions. Your Tire lifespan depends on Safety concerns, Replacement guidelines, Tire maintenance, Seasonal effects, Driving habits, Storage conditions, Rubber degradation, Performance impact, and Inspection frequency. You should inspect them regularly, and replace any tire at ten years, even if tread looks fine.

Conclusion

Now you know where to find the DOT code and how to decode the tire’s birth date. But one detail still matters: age. Even if the tread looks fine, hidden rubber breakdown can build quietly over time. Check the full TIN, confirm the week and year, and compare it to your tire’s service life. If the code shows the tire’s been around too long, don’t wait—replace it before the next drive.