Offset to Backspace Calculator
Use this calculator to find your backspace by plugging in your offset in millimeters (mm) and rim width (inches)
Backspace will be displayed in inches.
See our fitment as an example.
Backspace to Offset Calculator
Use this calculator to find your offset by plugging in your backspace (inch) and rim width (inch)
Offset can be positive or negative
See our fitment as an example.
NEGATIVE offset
NEGATIVE offset number means the mounting flange is past the centerline of the rim towards the inside of the car.
POSITIVE offset
POSITIVE offset number means the centerline of the flange is towards the outside of the rim.
ZERO offset
ZERO offset indicates the mounting pad centerline is dead center in the rim.