When fitting spacers to your car, you will need to extend the lenght of your bolt from standard lenght to: standard lenght + spacer width. For Example if your car takes a standard 28mm bolt and you use a 20mm spacer, you'll need to bolt the spacers on with a 48mm long bolts. Common sense right?!??!?!.....
PCD : 5/100 or 5/112
Centre Bore: 57.1