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What do the long line of numbers and letters printed on tires mean? |
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It's basically a code for tire's particular qualities. For example, if you read P205/75R1487S, it would mean the following: P = Passenger car 205 = Tire width in millimeters 75 = Aspect ratio (ratio of height to width) R = Radial (the type of tire tread), as opposed to all-season 14 = Wheel diameter, measured in inches. This is essential for appropriately sizing a tire 87 = The load index, which is a code for the maximum weight the tire can handle at its maximum speed--the larger the number, the more the tire can handle S = The speed rating; ratings of S and T are lower (for standard tires), while a V or Z rating is higher (for racing tires)
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