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      07-30-2011, 12:07 PM   #4
m3keash
Second Lieutenant
 
Drives: E93, JB/Bamboo, Adv.1 8.3 20s
Join Date: Mar 2011
Location: NC

Posts: 246
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Quote:
Originally Posted by Rob@StrasseForged View Post
Well the speed that the speedometer is read is measured by revolutions the speed sensor in the transmission picks up coming from the output shaft... That is all i know haha but you can use this chart to measure overall diameter between tire sizes!

http://www.miata.net/garage/tirecalc.html
Great calculator.
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