I don't know what happened to their site, but team 61 used treads for 10 years and had lots of pictures. If anyone was an expert on treads it would be them. But there site seems to have vanished...
This was their site anyways...
I figure you've already looked through CD media, but here are my favorites:
http://www.chiefdelphi.com/forums/sh...ad.php?t=25346
http://www.chiefdelphi.com/media/photos/17058
Over the years I've also found some interesting Bercoflex alternatives:
http://www.fnsheppard.com/index.htm
http://www.robotcombat.com/store_tanktreads.html
http://www.mectrol.com/