This calculator is handy to calculate the diameter of your tires or future tires.
This calculator is handy when you need to convert an offset measurement to backspacing.
This calculator is handy when you need to convert backspacing to offset for wheel measurements.
This calculator is handy when you need to calculate the diameter difference between two tire sizes.
This calculator is handy when you need to calculate the impact a new tire size has on the speedometer.