What do the numbers and letters on tires mean?

Understanding tire service description, load rating, and speed rating

If you look at the sidewall of a tire, you’ll see a whole slew of characters and numbers. This is basically a code that includes information about size, construction, and guidelines for use of the tire -- and we’re here to help you decipher it. In this article, we’ll look at just one small part of the code: the service description.

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