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Power Strokes
Aftermarket Super Duty 1999 - Current
Wheel/Tire Tech Thread
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[QUOTE="UPINSMOKE, post: 284613, member: 75"] Height will depend on rim size. The first number represents the width of the tire in mm I believe. The second number is a proportion of the first and will help to determine side wall height. For example 305/70 r 20 : 305/25.4 = 12.008 inches wide. 12.008 x .70 (second number in the tire size as a decimal) = 8.4. 8.4 is the height of one half of the tires sidewall. You have top and bottom sidewall, so you double the 8.4 = 16.8 Take the sidewall height, and add rim diameter (20), and you have a tire that is almost 37 inches tall (36.8). That tire on 18's would be 34.8" tall, on 16's would be 32.8" tall. [/QUOTE]
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Aftermarket Super Duty 1999 - Current
Wheel/Tire Tech Thread
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