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How To Read Dot Numbers On Tires

Tires are an essential component of your vehicle, and it’s important to ensure they are in good condition for safety on the road. One way to determine the age of a tire is by reading the DOT number on the sidewall. DOT numbers are a series of letters and numbers that indicate the manufacturing date and other relevant information about the tire.

Understanding how to read DOT numbers on tires can help you determine when they were manufactured and whether they are still safe to use. This information can also be useful when purchasing new tires to ensure you are getting a fresh product.

how to read dot numbers on tires

How to Read DOT Numbers on Tires

The DOT number is located on the sidewall of the tire and begins with the letters “DOT.” Following the DOT letters, there will be a series of numbers that indicate the manufacturing date of the tire. The last four digits of the DOT number represent the week and year the tire was made. For example, if the last four digits are “2018,” it means the tire was manufactured in the 20th week of 2018.

In addition to the manufacturing date, DOT numbers also provide information about the tire’s size, load capacity, and speed rating. This information can be useful when selecting the right tires for your vehicle based on its requirements and driving conditions.

It’s important to note that tires have a recommended lifespan of six years, regardless of the tread depth. After six years, tires may start to deteriorate and become unsafe to use. Checking the DOT number can help you determine the age of your tires and decide whether it’s time to replace them.

When purchasing new tires, always check the DOT numbers to ensure you are getting a fresh product. Avoid buying tires that are more than a few years old, as they may have been sitting in a warehouse for an extended period and could be compromised in terms of performance and safety.

By understanding how to read DOT numbers on tires, you can make informed decisions about the age and condition of your tires. Regularly inspecting your tires and checking the DOT numbers can help keep you safe on the road and ensure optimal performance from your vehicle.

In conclusion, reading DOT numbers on tires is a simple yet important task that can help you monitor the age and condition of your tires. By following the guidelines provided by the DOT number, you can make informed decisions about when to replace your tires and ensure your safety while driving.


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