Wheel Offset Calculator
Fitment tools
Wheel offset & backspacing calculator
Compare a current and prospective wheel spec side by side. Enter width, offset (ET) and any spacer, and the diagram shows exactly how far the wheel face and inner barrel move relative to the hub — before you order.
Cross-section, viewed from above
Current
New
← Suspension / chassis side
Fender / street side →
How to read this: Backspacing is the distance from the wheel's mounting face to its inner lip. Increasing offset (or removing a spacer) pulls the wheel in toward the chassis; decreasing offset (or adding a spacer) pushes it out toward the fender. This tool is a guide for comparing specs — always confirm final fitment against your exact suspension, brake and fender clearances with our team before ordering.