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Race Slick Question

Old 03-31-10, 06:24 AM
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Race Slick Question

285/645/18. What does the sidewall height of 645 relate to? Is it a 35/30/40 etc....? Thanks,
Jim
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Old 03-31-10, 07:04 AM
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It's the overall diameter of the tire... race tires don't use that silly sidewall-as-percentage-of-width/aspect ratio garbage that street tires do.

It's millimeters, so divide by 25.4 to get the height in inches.
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Old 03-31-10, 10:07 PM
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Thanks... on track soon I hope..
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