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What do the numbers on a tire represent?

1 Answers

OSadie

07/30/25 8:33am

Tire data indicates the tire section width, aspect ratio, wheel diameter in inches, and tire load index. For example, in a 215/55R19 91W tire, 215 represents the tire section width, 55 is the aspect ratio, R stands for radial construction, 19 is the wheel diameter in inches, 91 is the tire load index, and W indicates the maximum speed of 270 km/h under load. Additional information: 1. Tire: A circular elastic rubber product mounted on metal rims, used on various vehicles or machinery for ground contact and rolling. 2. Tire functions: Supports the vehicle body, absorbs external shocks, ensures contact with the road surface, and maintains driving performance; it endures various deformations, loads, forces, and high/low temperatures during operation, thus requiring high load-bearing, traction, and cushioning capabilities.

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