gibz4 wrote:I was looking at a set of 19" TSW Catalunya's that have an offset of 20. Can i just add a 20MM spacer to make them fit the 06 M45 since their factory offset is 40? I have 2 bent 19" stock rims and would like to upgrade them..
Double nono.
When your offset is 20mm and you add a spacer your offset becomes zero!
Furthermore you're FAR better off getting the right offset wheel from the start. Why add weight and potential for vibrations when you can nip it by simply getting the right wheel in the first place. Also, good spacers are expensive.