What does 235/45r18 mean?

1 Answers
JulietAnn
07/30/25 5:07am
235/45r18 refers to: 235 indicates the tread width, measured in millimeters; 45 is the aspect ratio, representing the ratio of the tire sidewall height to the tread width, with 45 meaning 45%; r stands for radial tire; 18 denotes the rim diameter of 18 inches. Tires are circular elastic rubber products mounted on various vehicles or machinery to roll on the ground. They are typically installed on metal rims, supporting the vehicle body, cushioning external impacts, ensuring contact with the road, and maintaining driving performance. Tires often operate under complex and demanding conditions, enduring various deformations, loads, forces, and temperature extremes during use. Therefore, they must possess high load-bearing capacity, traction performance, and cushioning ability.
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