Proudly Manufactured
in the U.S.A.

TIRE SIZE/GEAR RATIO AND SPEEDOMETER CALCULATORS

Old Tire Diameter:
New Tire Diameter:
Speedometer MPH:


Actual MPH

Old Tire Diameter:
New Tire Diameter:
Current Gear Ratio: :1


Effective Ratio

 
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1-800-587-7633
 

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