Measuring Wheel Offset
To get your wheel's offset measurement. You will need your
Wheel backspace measurement (Refer to the Measuring Wheel Back Spacing Thread)
Wheel Width
Wheel Center line (outboard flange to inboard flange measurement)
Subtract:
Wheel center line from Wheel backspace to get offset.
If backspace is less than the wheel center line the offset is negative
If backspace is greater than the wheel center line the offset is positive
Tip:
To convert from inches to mm multiply by 25.4
To convert from mm to inches divide by 25.4