Speedometer Correction Factor

If you've added bigger tires to your truck and haven't gotten around to correcting the speedometer then this page is for you. Just enter your new actual tire diameter and you old actual tire diameter. Then add the indicated MPH you want to check, the calculator will do the rest for you and let you know how much your next speeding ticket is going to be for.

This info is for entertainment purposes only and is not to be used as a legal defense.
Offroad Exchange takes no responsibility for the accuracy of the information provided.

New Tire Size

Old Tire Size

Indicated MPH

Actual MPH =