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Old Mar 6, 2005 | 05:26 PM
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Tires sizes

305/70/16 , how many inch tire is that
 
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Old Mar 6, 2005 | 06:14 PM
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33" in diameter, 12" wide (305/25.4).
 
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Old Mar 17, 2005 | 12:55 PM
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What size does a 255-70 convert to?
 
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Old Mar 17, 2005 | 01:05 PM
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So how does that work the bigger the first number the taller the tire is and the smaller the 2nd number the wider the tire is?
 
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Old Mar 17, 2005 | 01:52 PM
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ford5.8...the first number is the tire cross-section width in mm. the second number is the "aspect ratio", which determines how tall the tire is, and is the percentage of the width.

For example, the 255-70 is 255 mm wide, and 178.5 mm tall (70% of 255).

To get the diameter in inches, we need the rim diameter....is it a 255-70 16??
 

Last edited by DonsFx4; Mar 17, 2005 at 02:06 PM.
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Old Mar 17, 2005 | 02:04 PM
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This site might help you:

http://www.1010tires.com/TireSizeCal...?action=submit

 
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Old Mar 18, 2005 | 02:18 PM
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I use this enter the metric tire size and it will convert it for you.
 
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Old Mar 18, 2005 | 05:39 PM
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thanks for the link, that helps alot.
 
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Old Mar 21, 2005 | 01:48 AM
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That's a big tire. Where did you find a 305 at? Most places after 30" convert to US.
 
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