OK I need to move the brake rotor and wheel about 2 or maybe 3 mm out of the hub, so my new brakes fit... Now, could I just get some wide steel rings for each bolt (4 in this case for each rotor & wheel) or should I get a wheel spacer or something?

 

I don't think you should have to relocate the rotor in order to compensate for new pads (if thats what you're saying)...

 

They're not new pads, they are new calipers & rotors but the caliper is hitting the rim and the rotor is hitting the caliper on the inside.

 

This isn't really a "suspension" issue. Your probably gonna find much better info in the tech section for your chassis...

It sounds like your just using the wrong parts (perhaps from the wrong car)...