Tyre, Transfer & Diff Calculator

Transmission

If required, you can manually enter your transmission gear ratios in the fields below.

For more information regarding transmissions/gearboxes refer to Engine & Gearbox Information

Diff Ratio:

This may also be referred to as "Axle (Gear) Ratio".

Tyre & Wheel Size

Width:

Sidewall Height:

Wheel Diameter:

or Diameter (inches):

Transfer Case

High Range:

Low Range:

Engine RPM

Engine RPM:

Final Calculations

These speeds are calculated from the above information. Due to slight differences in your setup, the actual speeds may be slightly different.