How to Read Tire Specifications and Models?
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Tire specifications are commonly represented by a set of numbers, where the first number indicates the tire section width, and the latter denotes the rim diameter in inches. The international standard tire code expresses the section width and aspect ratio as a percentage in millimeters. This is followed by: the tire type code, rim diameter (in inches), load index (permissible load capacity code), and permissible speed code. Additional information: 1. Speed rating: Tires also feature a letter indicating the speed rating, which represents the maximum speed at which the tire can carry a specified load under defined conditions. Letters A to Z denote certified speed ratings ranging from 4.8 km/h to 300 km/h. 2. Tire model specifications: Taking a 195/55R15-85 tire as an example, 195 represents the section width, 55 is the aspect ratio, and 15 is the rim diameter. Notably, the load index "85" indicates that a single tire can bear a maximum weight of 515 kg, so four tires would total 4*515=2060 kg.