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Tires naturally degrade over time, even if unused, and can become unsafe after six years. The manufacturing date is found on the tire’s sidewall within the DOT code, with the last four digits showing the week and year of production (e.g., 2422 = 24th week of 2022). Drivers should inspect all tires—including the spare—to ensure they are not past their safe lifespan. Experts recommend replacing tires after six years and never using any older than ten. By understanding DOT codes and monitoring tire age, you can prevent accidents, improve performance, and make informed purchasing decisions.

When it comes to road safety, one of the most overlooked factors is the tire manufacturing date. Tires may look fine on the outside, but if they are too old, they can become unsafe, leading to risks like blowouts or poor performance. Knowing how to read a tire’s date code helps you make informed decisions about tire replacements and ensures your vehicle remains roadworthy.

This guide will walk you through the process of checking tire manufacturing dates, understanding the codes, and knowing why it matters. 

Why the Tire Manufacturing Date Matters

Tires are made of rubber, which naturally degrades over time—even if the tire isn’t used. Old tires lose grip, become more prone to cracks, and may fail under pressure. Most experts recommend replacing tires after six years, regardless of tread wear, and never using tires older than ten years.By checking the tire manufacturing date, you can be sure your tires are safe and not past their recommended lifespan.

Where to Find the Tire Manufacturing Date

The date is printed on the tire’s sidewall as part of the DOT (Department of Transportation) code. Every tire has this code, which provides information about where and when the tire was manufactured.

Look for a sequence starting with “DOT” followed by a series of letters and numbers. At the end of this sequence, you’ll find a four-digit number that reveals the manufacturing date. 

How to Read the DOT Code: Step-by-Step

1. Locate the DOT Code
   Check the tire’s sidewall. The code usually begins with the letters “DOT.”
   

2. Find the Last Four Digits
   The final four numbers represent the week and year the tire was made.
   

3. Understand the Numbers
   

• The first two digits show the week of manufacture (from 01 to 52).
  

• The last two digits represent the year.
  

4. Example: A code ending in 2422 means the tire was made in the 24th week of 2022.
   

5. Check All Tires
   Each tire may have a different manufacturing date, so inspect all four.

How Old Is Too Old for Tires?

• Less than 3 years old: Safe for use.
  

• 3–6 years old: Still usable, but inspect regularly for wear.
  

• More than 6 years old: Consider replacing, even if the tread looks fine.
  

• 10 years old or more: Replace immediately, regardless of condition.
  

Common Mistakes to Avoid

• Ignoring the date when buying “new” tires. Always check to ensure the tires are truly recent.
  

• Assuming tread depth is the only indicator of safety. Even unused old tires can be dangerous.
  

• Forgetting to check the spare tire—often, it is the oldest one in the vehicle.

Final Thoughts

Knowing how to check your tire manufacturing date is a simple but vital step in car safety. By understanding DOT codes and keeping track of tire age, you can prevent accidents, improve performance, and make smarter buying decisions. Always inspect all your tires, including the spare, and replace them on time to stay safe on the road.

 For more details, check out this Michelin Tires Buying Guide

FAQs on Tire Manufacturing Date

1. Where can I find the tire manufacturing date?
On the sidewall, within the DOT code at the end of the sequence.
2. How do I read the date on my tires?
The last four digits show the week and year (e.g., 1121 = 11th week of 2021).
3. Are old tires dangerous even if unused?
Yes, rubber degrades over time, making old tires unsafe even if they look new.
4. What’s the maximum safe age for a tire?
Experts recommend replacing tires after 6 years and never using tires older than 10 years.
5. Should I check the manufacturing date before buying tires?
Absolutely. Always confirm the date to avoid purchasing tires that have been sitting in storage for years.