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How do you determine the date of manufacture on a trailer tire?

Determining the date of manufacture on a trailer tire involves looking for a specific code on the tire sidewall known as the Tire Identification Number (TIN) or Department of Transportation (DOT) code. The DOT code is a combination of numbers and letters that provides information about the tire, including its manufacturing date.

Here’s how to find and interpret the date code on a trailer tire:

  1. Locate the DOT code: Look for a series of characters on the sidewall of the tire. The DOT code is typically located on one side of the tire, near the rim.
  2. Identify the last four digits: The last four digits of the DOT code represent the week and year of manufacture. The first two digits indicate the week, and the last two indicate the year.
    • For example, if the last four digits are “3018,” it means the tire was manufactured in the 30th week of the year 2018.
  3. Understand the date format: Some tires use a three-digit code where the first two digits represent the week, and the third digit represents the last digit of the year of manufacture.
    • For example, “251” would mean the tire was manufactured in the 25th week of a year ending in 1.

Keep in mind that tire age is also crucial for safety. Tires degrade over time, even if they have plenty of tread left, so it’s essential to replace them after a certain number of years, regardless of the amount of wear. Many experts recommend replacing tires that are six years old or older, regardless of the tread depth.

Always check the manufacturer’s recommendations and guidelines for tire maintenance and replacement, as they can provide specific information tailored to the type of tire you have.

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