I got a great deal on a set of 15X8 Cragar S/S wheels from a forum member recently, and just yesterday I installed these on them:
http://www.mandhtires.com/store.php?crn=73&rn=316&action=show_detail
10-1/2" tread on an 8" wheel. The tire ad says 10" tread, but I measured them with a tape and they're 10-1/2" wide. They look great!
Lemme know if you want a picture.
George
