Automobile tires are marked with a series of letters and numbers that provide information about tire structure and dimensions. Understanding this code is important when selecting tires for a particular vehicle or application.
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The P indicates the tire is for use on a passenger car.
This number indicates the section width--the maximum width in millimetres from the outer sidewall to the inner sidewall; in this case 205 millimetres.
This is the sidewall height-to-width aspect ratio given as a per cent. The 55 means that the sidewall height is 55 per cent of the tire width.
The letter after the aspect ratio indicates the style of construction. R means it is a radial tire.
The number following the construction code is the wheel size in inches. This tire is designed to fit a 16-inch diameter wheel.
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