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The Garage
Breakdown of Tire Sizes
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<blockquote data-quote="det_riot" data-source="post: 896639" data-attributes="member: 11417"><p>you are correct on the rims. an 18x10 rim means 18" in diameter and 10" wide.</p><p>as far as the tire size, you're very confused.</p><p></p><p>For purpose of explaining we'll use the tire size 335/30/18</p><p></p><p>the first number is the width in mm.</p><p>the tread is 335mm wide.</p><p></p><p>the second number is a ratio of tread width to sidewall height. so the sidewall is going to be 30% of the width. 30% of 335.</p><p>335 x .30 = 100.5mm </p><p>so the sidewall of the tire is going to be 100.5mm</p><p></p><p>the third number is the inner diameter of the tire, aka the rim diameter.</p></blockquote><p></p>
[QUOTE="det_riot, post: 896639, member: 11417"] you are correct on the rims. an 18x10 rim means 18" in diameter and 10" wide. as far as the tire size, you're very confused. For purpose of explaining we'll use the tire size 335/30/18 the first number is the width in mm. the tread is 335mm wide. the second number is a ratio of tread width to sidewall height. so the sidewall is going to be 30% of the width. 30% of 335. 335 x .30 = 100.5mm so the sidewall of the tire is going to be 100.5mm the third number is the inner diameter of the tire, aka the rim diameter. [/QUOTE]
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Breakdown of Tire Sizes
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