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tire size conversion speedometer
R stands for radial tires, and the types of tires used in general family cars are radial tires. 16 means that the diameter of the rim is about 16 inches. After the tire size 205/55R16, generally speaking, there are decimal letters such as 91W. Among them, 91 is the load index of the tire, which means that the maximum bomb load of the tire is 615Kg. W is the average speed rating of the tire, which means that the maximum speed of the tire is 270km/h under the legal water pressure. The values corresponding to the load index and the flight speed level are compared by using the corresponding comparison table. Tire size is a small part of the important information on the sidewall, and there are many important information marked on the sidewall. The sidewall of each tire will be marked with various linearities of the tire, such as tire size information, Bearer class and average speed class and more. The important information of the size is quite intuitive and can be read indirectly. However, the average speed standard is expressed in English and Greek letters, which represents the average speed standard of the certificate of the tire from 4.8 km/h to 300 km/h. The average speed level of the tire is compared with the table to get the value one by one. Let's take the tire in the picture below as an example, where the W in 94W indicates the flying speed standard of the tire. Driving through a red light will increase tire damage and increase the chance of skidding, which is very dangerous. The average driving speed cannot be much higher than the maximum speed of the tire.
The speed category shows the top speed at which the tire can carry the regulated load under the regulated prerequisites. The sidewall of each tire will be marked with the linearity of the tire, such as the size information of the tire, the load level and the flight speed standard, etc. I believe that everyone will read the size information, but the bearer standard and speed standard need to be matched one by one with an appropriate comparison table. Let's take the tire in the picture below as an example, where the "W" in "94W" indicates the flying speed standard of the tire. We first retrieve the maximum speed it represents by referring to the tire speed level comparison table. We can learn that the maximum speed of the tire represented by "W" is 270Km/h.
Refers to the tire category, which means that the tire is a radial tire, and the tire category used by general off-road vehicles is radial tires. Refers to the body size, this tire depends on the 15-inch body. It refers to the load index of the tire, which is also the largest steel frame of the tire. Compared with the tire load index table, the maximum floor of this tire is 560kg. It refers to the speed category of the tire, or the maximum speed of the tire. According to the tire flight speed rating table, the maximum speed of this tire is 190km/h. After introducing the size of commercial vehicle tires, we can find the corresponding outer diameter through the comparison table of tire outer diameters
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