WHEEL OFFSET AND BACKSPACE CALCULATOR

Take the guesswork out of wheel fitment.  Enter your wheel measurements to calculate offset and backspacing, then compare the results with your suspension kit’s requirements to help choose the right wheels for your setup.

Offset to Backspace Calculator

Enter wheel width (inches) and offset (mm). Backspace displays in inches.

5.50

Backspace to Offset Calculator

Enter wheel width and backspace (inches). Offset can be positive or negative.

25.4
5.50"Backspace
3.50"Frontspace
PositiveOffset type
Centerline HUB +25.4 mm Backspacing 5.50" − Negative Offset Positive Offset + Back of wheel Face of wheel