Offsets

[KEN33Y]

I'm sure the questions have been asked and answered before therefore, I was hoping someone could recall.

 

I eventually plan to change the 20" BBS alloys currently fitted on the XKR (I don't like them and do not see the need for 20" burning more rubber away).

 

I will only be stepping down a size and before I purchase I need accurate information to technical data therefore, my questions are;

 

     1.   What is the Offset for a XKR?

     2.   Does the front and rear share the same offset?

     3.   What is the rear wheel width? i.e. 9.5 etc

     4.   What is the front wheel width? i.e. 8.5 etc

 

Thank you very much (  ;) Diolch yn fawr ) in anticipation of your assistance.