Off-Road Calculators: Tires, Gearing and Wheels
Off road calculators for tire size, wheel offset, gearing and speedometer error. They are being built now. Until they ship, the guides below cover the same ground.
Calculators
Tire size calculator
Diameter, width and sidewall from any size code.
Coming soonTire size comparison
Two sizes side by side, with the speedometer error.
Coming soonWheel offset calculator
Offset and backspacing, and what changes in the wheel well.
Coming soonGear ratio calculator
RPM at speed, and when bigger tires call for a regear.
Coming soonSpeedometer calculator
How far off your speedometer is after a tire change.
Coming soonTire pressure calculator
A starting point for airing down, before you check conditions.
Coming soon