Tire revolutions per mile: If needed, use the tire dimensions calculator on the right to calculate this value
Final drive gear ratio:
Transmission drive gear ratio*:
Output shaft teeth count1:
RPM:
MPH:
Speedometer gear teeth:
*Click to display a table of transmission gear ratios 194-97 MN12 and 93-98 FN10: 7; all others: 8
Enter tire diameter (inches) or fill out the fields below: If a tire diameter is entered above, the tire dimensions fields below will be ignored during calculation.
Treadwidth (mm):
Sidewall:
Rim diameter (inches):
Diameter:
Circumference:
Revolutions per mile:
Stock Size
Diameter: If a tire diameter is entered above, the tire dimensions fields below will be ignored during calculation.
Rim diameter:
Size 2
Tire revolutions per mile:
If your speedometer says 60 MPH, you are traveling 60 MPH.
If your speedometer says 60 MPH, you are traveling MPH.