I stumbled across this web page. It has listings of every wheel I could think of, the mfg process (cast or forged), size, and weight! Includes OEM and aftermarket rims. Much props to this guy.

http://www.wheelweights.net

Just thought I'd share .

 

I'm not 100% positive but I think he has stopped working on that list and has it going over HERE. Click on the performance bar and then it is down the page.