I thought members might be interested in the following sites. These sights give details of the sizes you should know about if you are purchasing New or Used wheels such as the PDC and Off Set parameters. They give the sizes of other makes of Cars so that you can compare and check if they would fit your car etc.
Happy Browsing - The final decision is yours alone !!

and http://www.rtecalloywheels.co.uk/fitment_guide.htm