225/55 16 speedo correction

wilbur-t

Top Fuel
Joined
Mar 8, 2006
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Carthage N.C. U.S.A.
I am changing rear tires this week from a 245/50 16 Yokohama [Which lasted 16k] to the 225/55 raptor. Is there a tune boy speedo correction figure for this tire, or is there not enough differance in height to matter?
 
Revolutions per mile

Most manufacturers provide the revolutions per mile on their tires. That's the best comparison measurement. You would need the exact brand and model. Simple math from there and you have your answer as a percentage effect on the speedometer....
 
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