Pilot sport 4 215 55 zr17的意思
"Pilot Sport 4 215 55 ZR17" is a tire size designation that provides information about the tire's dimensions, construction, and performance. Here's what each part of the designation means:
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"Pilot Sport 4" - This is the brand and model of the tire. "Pilot Sport" refers to the Michelin Pilot Sport line of tires, which are designed for high-performance vehicles and provide excellent grip and handling. The "4" indicates the generation or version of the tire.
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"215" - This is the tire's section width, measured in millimeters. It represents the width of the tire from one sidewall to the other when mounted and inflated on a rim.
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"55" - This is the aspect ratio, which is the ratio of the tire's sidewall height to its section width. In this case, the sidewall height is 55% of the section width. A lower aspect ratio results in a lower profile and a stiffer sidewall, which can improve handling and responsiveness.
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"ZR" - The "Z" in the speed rating indicates that the tire is capable of speeds in excess of 149 mph (240 km/h). The "R" stands for radial construction, which is the most common type of tire construction.
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"17" - This is the wheel diameter, measured in inches. It means the tire is designed to fit on a 17-inch wheel.
In summary, the tire size "215/55 ZR17" describes a Michelin Pilot Sport tire that is 215 millimeters wide, has a 55 aspect ratio, is rated for speeds above 149 mph, and is meant to be used with a 17-inch rim.