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What does 21555r16 tire mean?

1 Answers
MollyAnn
09/05/25 5:44am
21555r16 tire means: R refers to radial tire; 16 refers to 16-inch wheel rim; 215 refers to 215 mm tire width; 55 refers to the aspect ratio, which is the ratio of tire height to tire width being 55%, calculated total diameter is 64.29 cm. Below is more information about tire specifications: 1. The numbers before the letters in the tire indicate the tire size, generally the width of household cars ranges between 200 to 250 mm. 2. The second number represents the tire's aspect ratio, which is the ratio between the tire's section height and section width. 3. The letter R is the initial of Radial-tire, meaning radial tire. 4. The number after the letter indicates the diameter of the wheel rim.
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