Wheel Offset and Backspace Calculator

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.

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.

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.

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