I added a Brembo Big Brake kit to my 1990 e30 M3. I have 17" OZ wheels that have an offset of 22 in the front. To get these rims to clear the calipers, I needed to add a 25mm Hubcentric spacer. Now they fit. What is my effective offset +47 (22+25) or -3 (22-25)? I am just trying to determine what I would need to fit front wheels without spacers. Thanks in advance JOE