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Metric tire size speedo drive gear teeth number?

Auggie56

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Is there a chart or dose someone know? 3:26 gear. Tire P255/60RS. And the fatal question. does anyone have that plastic drive gear, and it's aluminum housing they are willing to part with?

Thanks
 
You need to measure the circumference of the actual tire filled with air, divide that by 3.1416
and that will tell you the exact height of the tire. Then you look at the Mopar chart to see which
gear you need with the corresponding rear gear ratio.
mancini-racing-35-tooth-speedometer-gear-35.jpg
 
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