Yes, you can find the age of any tire by looking for the tire manufacturing date code. This code is a small set of numbers on the sidewall that tells you exactly when the tire was made, which is key for safety and value.
Every tire sold has this stamp. It is not always easy to spot at first. Knowing how to read it helps you avoid old, unsafe tires. It also helps you get the most life from your purchase.
I have checked this code on dozens of tires over the years. It is one of the most important things to look at before you buy. An old tire can be risky even if the tread looks deep.
What Is a Tire Manufacturing Date Code?
Let’s break down what this code really is. It is not a random set of digits.
The tire manufacturing date code is part of a longer string of letters and numbers called the DOT number. DOT stands for Department of Transportation. This number gives data about where and when the tire was built.
The last four digits of this DOT number are the special part. They make up the actual tire manufacturing date code. You need to find the full DOT number first to see these last four numbers.
Before the year 2000, the code was only three digits long. This made things a bit more confusing. Tires made in the 1990s use that older three-digit tire manufacturing date code format.
For modern tires, the four-digit code is the standard. This is the code you will see on almost every tire for sale today. Learning to read it takes just a minute.
Where to Find the Tire Date Code on Your Tires
Finding the code is your first step. You have to know where to look on the tire’s sidewall.
Look for the letters “DOT” on the side of the tire. They are molded into the rubber. The full DOT number follows these letters. The entire string can be quite long.
Sometimes, the full DOT number is only on one side of the tire. The tire might be mounted with that side facing inward. You may need to get down and look behind the wheel or feel for the raised letters.
The tire manufacturing date code is always the last three or four digits of that long DOT string. On a newer tire, look for a four-digit number inside an oval or rounded box. This highlights the crucial tire manufacturing date code for you.
If you are buying a new tire, the seller should let you check this. Do not be shy about looking for the tire manufacturing date code before you pay. It is your right as a buyer to know the tire’s age.
How to Read and Decode the Tire Manufacturing Date Numbers
Reading the code is simple once you find it. The numbers follow a clear pattern.
For a four-digit tire manufacturing date code, look at the first two numbers. They stand for the week of the year the tire was made. Weeks are numbered from 01 to 52.
The last two digits tell you the year. A code that reads “1523” means the tire was made in the 15th week of the year 2023. That is around mid-April of that year.
What about the older three-digit code? The first two digits are still the week. The last digit is the year in the decade, which is the tricky part. A code of “248” could mean the 24th week of 1988, or 1998.
You have to look at the tire itself for clues if you see a three-digit code. Tires that old are almost always past their safe life anyway. The National Highway Traffic Safety Administration (NHTSA) has guides on tire aging that explain this risk.
Always double-check the year digits. A tire with a tire manufacturing date code from five years ago is much different than one from two years ago. This number is the tire’s birthday.
Why the Tire Production Date Matters So Much for Safety
This is not just a trivial number. The tire manufacturing date code is a major safety feature.
Rubber breaks down over time. This happens even if the tire is never used. Elements like ozone, heat, and sunlight make the rubber hard and brittle.
An old tire can look perfect on the outside. Its tread might be full. But the inner structure can be weak. This can lead to a sudden blowout while you are driving.
Most tire makers and safety groups say to replace tires six to ten years from their manufacture date. The Rubber Manufacturers Association (RMA) stresses that age matters as much as tread wear. The tire manufacturing date code is your only way to track this age.
Think of it like food in your pantry. It has an expiration date for a reason. The tire manufacturing date code lets you calculate that expiration date for your tires. Do not ignore it.
How Old Is Too Old? Tire Age Recommendations
So what is the rule? How old is too old for a tire?
Many car makers recommend a six-year maximum. They say you should replace any tire six years after the date on the tire manufacturing date code. This is a common guideline for safe driving.
Other experts, like those at Consumer Reports, say you can go up to ten years if the tire is in good shape. But you must check it often for cracks after the five-year mark. The tire manufacturing date code starts the clock.
For spare tires, this is even more critical. A spare tire can sit unused for years. It still ages. Always check the tire manufacturing date code on your spare before you need it in an emergency.
When buying used tires, the tire manufacturing date code is your best friend. Never buy a used tire that is over five years old from its manufacture date. The savings are not worth the risk.
Write down the date when you buy new tires. Base this date on the tire manufacturing date code, not the day you bought them. A tire could have sat in a warehouse for a year before you got it.
Step-by-Step Guide to Checking Your Tire’s Date Code
Let’s walk through the process. Follow these steps to check your tires today.
First, park your car on a flat surface and set the parking brake. You will need to get close to each tire. Bring a flashlight if you have one.
Look at the outer sidewall of one tire. Find the letters “DOT”. Trace the numbers that come after it until you reach the end of the sequence. Look for that final three or four-digit group.
If you do not see it on the outside, the full DOT number might be on the inner sidewall. You might need to turn your steering wheel all the way to get a better look inside the wheel well.
Once you find the tire manufacturing date code, write it down. Do this for all four tires plus the spare. Note which tire had which code.
Now, decode the numbers. Use the week and year system we talked about. Calculate how many years and months old each tire is from its tire manufacturing date code.
Make a note in your phone or car logbook. Write down the dates and the calculated age. Check them again every six months. This simple habit keeps you safe.
Common Mistakes People Make With Tire Date Codes
People get this wrong all the time. Avoid these common errors.
The biggest mistake is confusing the tire manufacturing date code with other numbers. The sidewall has many numbers for size and load. Only the last digits of the DOT number are the date.
Another error is not checking all the tires. Tires can be replaced at different times. One old tire on your car is a safety weak point. Check each tire manufacturing date code individually.
Some people think the sale date is the manufacture date. This is wrong. A tire could be old stock. Always trust the molded tire manufacturing date code in the rubber, not the store’s receipt.
Ignoring the spare tire is a huge oversight. That spare tire in your trunk has a tire manufacturing date code too. It is aging just like the others, maybe faster if it’s in a hot trunk.
Finally, people see good tread and think the tire is good. Tread depth tells you nothing about rubber age. A tire with great tread but a ten-year-old tire manufacturing date code is a hazard.
Tips for Buying New Tires and Checking Their Date
Use these tips next time you shop for tires. Be a smart buyer.
When you are in the tire shop, ask to see the tire before they mount it. Politely ask to check the tire manufacturing date code yourself. A good shop will have no problem with this.
Look for a recent date. Ideally, you want a tire made within the last year. A tire with a tire manufacturing date code from the last six months is fresh stock. This gives you the longest usable life.
Be wary of deals that seem too good. Sometimes shops sell off old inventory cheaply. That low price might be for a tire with a three-year-old tire manufacturing date code. You lose three years of safe use.
Check the SaferCar.gov website for tire recall information. You can use the full DOT number to see if a specific tire has been recalled. The tire manufacturing date code is part of that identifier.
If you buy online, ask the seller for the date code before they ship. Reputable online tire sellers will often list the date code range for their inventory. Do not accept a tire with an old tire manufacturing date code.
Frequently Asked Questions About Tire Date Codes
Where is the tire manufacturing date code located?
It is on the sidewall, molded into the rubber. Look for the letters “DOT” and then find the last three or four digits of that long number. That is your tire manufacturing date code.
How can I tell if my tires are too old?
Find the tire manufacturing date code on each tire. If the code shows the tire is more than six years old, you should start planning for replacement. Have a pro check any tire over five years old for cracks.
Is a tire with a 2020 date code still good in 2024?
A tire with a 2020 tire manufacturing date code is about four years old. It is likely still okay if it has no cracks or damage. But it is halfway through the common six-year recommended life. Watch it closely.
Do all tires have a manufacturing date code?
Yes, all tires sold for road use in the U.S. must have a DOT number with a tire manufacturing date code. It is a federal safety requirement. If you cannot find it, look on the other side of the tire.
Can I use a tire with a date code from 2015?
Using a tire with a tire manufacturing date code from 2015 is not recommended. That tire is nine years old. Rubber degrades over time, making it unsafe for driving at high speeds or long distances.
What does the three-digit date code mean?
A three-digit tire manufacturing date code means the tire was made before the year 2000. The first two digits are the week. The last digit is the year of the decade (like “8” for 1998). Tires this old should not be used.
Conclusion: Your Tire’s Date Code is a Lifesaver
That small tire manufacturing date code holds big power. It tells you the true age of your tire when nothing else can.
Make it a habit to check this code on your cars. Do it when you check your tire pressure. Teach your family and friends how to find their own tire manufacturing date code too.
Your safety on the road depends on many things. Good tires are at the top of the list. Knowing how to read the tire manufacturing date code is a simple skill that makes every trip safer.
Tony Kilmer is an auto mechanic and the author behind CarTruckAdvisor.com. He shares practical, no-nonsense guidance on car and truck maintenance, common problems, and repair decisions—helping drivers understand what’s going on and what to do next.
