Wheel/Rim specs - Anyone have a good site?

[Cory_Langford at bcit.ca (Cory Langford)]

It is time to figure out if I am going to run with one of the set of rims I
have lying around in the garage, or drain the budget on the racer by
getting a new set of rims.

So I need to find out what the specs are for various VW stock rims (as I
have many different varieties of 14 inch and 13 inch rims)

I am looking for a site, etc. that might list the various rims, with their
offsets, their width and if possible their weight.  (I know I am asking a
lot)

Any ideas?  - or if you know any of the info, you can sent them to me  :)

Thanks,

Cory