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What is the meaning of car tire markings?

1 Answers

Cameron

07/30/25 12:38am

The markings on car tires include specifications such as tire size, ply rating, rim specifications, and speed rating. Here are the relevant details: 1. Tire size: Usually represented by a set of numbers, where the first number indicates the tire section width and the latter denotes the rim diameter, both in inches. 2. Ply rating: This refers to the nominal number of cord layers in the tire's rubber, which may not exactly match the actual number of cord layers, serving as an important indicator of tire strength. The ply rating may be marked in Chinese, such as '12 ply rating', or in English, such as '14PR' meaning 14 ply rating. 3. Rim specifications: Indicate the rim size compatible with the tire for practical use, such as 'Standard Rim 5.00F'. 4. Speed rating: The maximum speed at which the tire can carry a specified load under defined conditions.

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