Table summarizes how to read speed ratings codes printed on tyres and more.
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There is example symbol, which we can found on the car tire below. We can read from it, that:
- The tire has 225 mm of width.
- Its aspect ratio (height divided by width) is 55%. So, it's rather "wide" tire.
- The tire has radial construction.
- The tire fits a 17" diameter wheel.
- The load index of this tire is 97. It means, that its maximum load is 1,610 lb (730 kg). The table showing how to convert load index value into load in kilograms or pounds can be found in the calculator: Tyres codes - load index.
- Its speed rating is W, which means that we can drive with maximum speed 168 mph (270 km/h). The table showing how to convert speed rating symbol into speed in mph or km/h can be found in the calculator: Tyres codes - speed ratings