Where to Find the Date on a Tire: DOT Code Location Guide

You can find a tire’s date on the DOT code stamped on the sidewall. Look for the full code on the outer sidewall, then check the other side if you only see part of it. The last four digits show the manufacture date: the first two are the week, and the last two are the year. If your tire is older, the code may use three digits instead. Keep going to learn how to read it and when to replace it.

Key Takeaways

• Find the tire date in the DOT Tire Identification Number on the sidewall, usually near the bead.
• Check both sidewalls, because one may show the full DOT code while the other shows only part of it.
• The last four DOT digits show the manufacture date: first two digits are the week, last two are the year.
• Tires made before 2000 use a three-digit date code, with the last digit indicating the year.
• Replace tires based on age, not tread alone; many should be replaced after about six years.

What Is a Tire DOT Code?

A Tire DOT Code, officially called the Department of Transportation Tire Identification Number (TIN), is the string of letters and numbers on the tire sidewall that tells you key details about the tire, including its manufacturer, size, and production batch. You can use this Tire Identification Number (TIN) to judge tire safety and track recalls. The code starts with DOT, then 10-12 characters. Its date code appears in the last four digits, which show the week and year of manufacture. If your tire was made after January 1, 2000, the first two digits give the production week and the last two give the year. If it was made before 2000, the date code uses three digits instead. When you read the Tire DOT Code, you get clear age data, so you can decide when to replace worn tires and protect your freedom to travel safely, confidently, and on your own terms. Additionally, understanding all-season tire performance can help you make informed decisions about tire replacements based on age and condition.

Where to Find the DOT Code on a Tire

You’ll usually find the DOT code on the tire’s outer sidewall, where you can inspect it easily. Some tires show only part of the code on one side, so check the opposite sidewall for the full DOT string if you can’t see it all. Once you’ve found it, read the last four digits to get the tire’s manufacture week and year, like 2319 for the 23rd week of 2019. Understanding UTQG ratings can also help you assess the tire’s durability and performance.

DOT Code Sidewall Location

The DOT code sits on the tire sidewall, and you can usually find it on both the inner and outer surfaces. Start by looking for the sequence that begins with DOT; this Tire Identification Number (TIN) includes up to 13 characters from the tire manufacturer, covering size and production details. The date code appears in the last four digits, which tell you the week and year the tire was made. That makes the sidewall your key to checking tire age with confidence. On many tires, the full DOT code is on one sidewall, while the opposite side shows a partial code. Some letters, like G, I, O, Q, S, and Z, are excluded, so the markings stay easier to read.

Full Vs Partial Code

On many tires, you’ll see a partial DOT code on one sidewall and the full code on the other, so it helps to check both sides if the date isn’t visible right away. You can usually find the complete DOT code on the tire’s sidewall, where it starts with DOT and runs 10 to 12 characters. If one side shows only a partial DOT code, flip the tire to locate the full version. The last four digits are the date code, and they tell you the manufacturing date. Look for those final digits at the end of the code, since they matter most for age checks. Some letters are skipped to prevent confusion, which keeps the code clear and easier to read.

Reading The Date Digits

Start by locating the DOT code on the tire’s sidewall, usually on the outer sidewall and sometimes on the inner one if the full code isn’t easy to spot. Once you find it, read the Tire Date Code at the end of the DOT code. The last four digits tell you when the tire was made: the first two digits indicate the week, and the last two indicate the year. For example, 2319 means the tire was produced in the 23rd week of 2019. If you only see part of the DOT code on one side, check the opposite sidewall of your tire for the full sequence. For tires made after January 1, 2000, this four-digit date format always applies, so you can verify freshness and act with confidence.

How to Read the Tire Date Code

Once you’ve found the DOT code on the tire’s sidewall, read the last four digits to see the date code. On tires manufactured since 2000, those four digits tell you the week of the year and the year of production. For example, 2319 means the tire was manufactured in the 23rd week of 2019. That simple tire date code helps you judge tire age without guesswork. If your tire shows a three-digit code, it was made before 2000: the first two digits mark the week, and the last digit shows the year. Check every tire, not just one, because different positions can age differently. This habit helps you make informed choices about safety and replacing tires on your own terms. Most tires should be replaced every 6 to 10 years, even if tread still looks fine. Regularly inspecting your tires for unique handling characteristics ensures optimal performance and safety. Read the DOT code regularly, stay aware, and keep control over what rolls beneath you.

How to Read 7-12 Character TINs

You can read a 7-12 character TIN by starting with the two-letter plant code, which tells you where the tire was made. Next, look at the one to two size characters and any optional construction codes that identify the tire’s specs. The last four digits are the date code, and they show the production week and year, such as 1319 for the 13th week of 2019. Understanding the tire manufacturing process can help you appreciate the importance of the date code in ensuring safety and performance.

Plant Code Basics

The plant code is the first key to reading a 7- to 12-character Tire Identification Number (TIN), and it tells you where the tire was made. You’ll usually find the first two characters of the DOT code here, and they identify the plant that manufactured the tire. That matters because the plant code helps you trace the producer and location, which supports recall checks and tire safety decisions. After the plant code, you’ll see one or two characters for size, plus up to four optional construction characters. Don’t confuse those with the last four digits: that’s the date code. For tires made since 2000, those digits show the week and year. For example, 1319 means the 13th week of 2019.

Size And Construction

After the plant code, the TIN moves into the tire size code and any construction characters, which help narrow down the exact tire model and build. When you read a Tire Identification Number (TIN), you’re seeing how the DOT system organizes tire manufacture details. The first two characters mark the plant code, then the tire size code follows, with optional construction characters that add more detail. A shorter 7-character TIN gives you fewer specifics, while a longer 13-character TIN gives you more manufacturing information. On tires made since 2000, the final four digits form the date code. That code helps you check age, support safety, and spot recalls. Once you know the pattern, you can read the TIN with confidence and act on what it tells you.

Date Code Location

Look on the outer sidewall for the DOT code, which starts with “DOT” and ends with the tire’s date code. Read the full code on at least one tire sidewall, because the date code tells you when it was manufactured. For tires made after 2000, use the last four digits: the first two digits show the production week, and the last two digits show the year. If you see a 7-12 character TIN, understand that up to four optional characters can appear before the date code to show construction details. On a 13-character TIN, the first three characters identify the plant, the next six describe size and type, and the final four give the manufacture date.

How to Read 13-Character TINs

To read a 13-character Tire Identification Number, find the code on the sidewall after “DOT” and break it into three parts: the first three characters show the manufacturer and plant, the next six identify the tire size and type, and the final four digits tell you the date of manufacture. Use the Tire Identification Number (TIN) to decode the DOT code without guesswork. The last four digits reveal the manufactured date: the first two digits show the week, and the last two show the year. Additionally, understanding treadwear ratings can help you assess the longevity of your tires.

Why DOT Tire Codes Matter

DOT tire codes matter because they tell you who made the tire, where it was made, its size, and when it was produced. With DOT Tire Identification, you can trace a tire’s origin and verify its date code for better compliance and recall support. The last four digits show the week and year of manufacture, so you can judge tire age with confidence. That matters because rubber doesn’t stay safe forever; even tires with good tread can weaken and blow out as they age. When you check the code, you protect yourself from avoidable failure and make smarter replacement choices. You also help manufacturers reach you if a recall happens, since registration links your tire to the right owner. In practice, reading DOT codes gives you control, not guesswork. It helps you demand tire safety, maintain reliable performance, and keep your vehicle ready for the road ahead. Additionally, understanding treadwear ratings can further aid in making informed decisions about tire replacements.

How to Read Pre-2000 Tire Codes

When you’re checking an older tire, the date code can look different from the modern four-digit format. On a pre-2000 DOT code, you’ll see three digits stamped after the DOT letters on the sidewall. The first two digits show the week of production, and the last digit tells you the last digit of the production year. Use that clue to pin down the date code and understand when the tire was made.

• 439 = 43rd week
• 9 = 1999’s last digit
• So the production year is 1999

That means a code like 439 points to a tire built in the 43rd week of 1999. If you’re reading a tire this old, remember that older rubber compounds can affect tire safety and performance. Additionally, tire selection is crucial for ensuring reliable grip and comfort on various road conditions, so you deserve clear facts, not guesswork, so check the DOT code carefully before you trust the tire on the road.

When to Replace Tires Based on Age

Even if a tire still has good tread, you should usually replace it after 6 years because age-related rubber deterioration can raise the risk of blowouts. Check the tire date code on the sidewall to see when it was manufactured, then count the week and year to judge its age. Don’t wait for tire tread alone to decide; age matters even when the grooves look fine. If your tires are over 10 years old, most manufacturers say you should replace them completely because the rubber compounds have broken down too far. Also, inspect for signs of aging like cracks, bulges, or dry rot. If you spot any of those, replace the tire right away, even if tread depth seems adequate. Regularly checking the manufacturing date keeps you from using tires past their safe life and helps you drive with more freedom and less risk. Additionally, consider the 3PMSF-rated tires for enhanced performance in severe winter conditions.

Frequently Asked Questions

Where to Find Dot Date Code on Tires?

You’ll find the DOT date code on the tire’s sidewall, usually near the inner or outer edge after the letters “DOT.” The last four digits show the week and year it was made, which matters for tire age importance and tire replacement signs. Use tire maintenance tips, checking tire pressure, and understanding tire markings to stay safe. These safe driving practices help you know when your tires need replacing.

What if My Tire Doesn’t Have a Date Code?

If your tire doesn’t have a date code, you’re not doomed by a mountain of mystery. You may have an older tire with a three-digit code, or the code may sit on the other sidewall. Check tire safety, tire maintenance, and tire storage records, then get a tire inspection. If you still can’t verify age, contact the maker and consider tire replacement, because tire lifespan matters for your freedom on the road.

How Many Digits Is the Tire Date Code?

The tire date code is usually four digits for modern tires, and you’ll find three digits on older ones. You can use it during tire safety tips, tire maintenance practices, and your tire inspection checklist. Its tire age significance helps you follow tire replacement guidelines and tire storage recommendations. If you read the code correctly, you’ll protect yourself, make freer choices, and keep your ride safer and more reliable.

How to Read a 3 Digit Dot Code?

A 3-digit DOT code reads like a trail map: the first two digits show the week of tire manufacturing, and the last digit shows the year’s final digit. So 439 means the 43rd week of 1999. You’ll use it for tire inspection, tire maintenance, tire safety, and tire lifespan checks. If your tire’s code is old, don’t wait—plan tire replacement. Older tires can look fine while their hidden age says otherwise.

Conclusion

Now you know where to find the date on a tire and how to decode the DOT code with confidence. Check the sidewall, spot the final four digits, and confirm the tire’s age before you drive. This simple safety step helps you stay smart, spot worn rubber sooner, and avoid risky rides. Use this quick code check regularly, and you’ll keep your tires in better shape, longer, with less stress and more peace of mind.