Wheel Offset & Spacer Calculator

Compare your current wheel with a new width and offset, then add a spacer to see where the wheel sits against the strut and fender.

Current wheel
inches
mm
New wheel
inches
mm
Spacer on new wheel

Thickness per side, in mm.

Cross-section through the wheel, seen from the front of the vehicle. Strut and fender are drawn as a fixed reference to your current wheel.

Inner clearance – Inside of the wheel to the strut
Outer position – Outside edge of the wheel