You sure it's from the front? Since you did try to replicate the sound by turning it yourself and it didnt happen maybe it's in the rear or on the other side? Sounds almost like a problem I was having and it ended up being something in the rear break drum. But could be any of the other suggestions that where mentioned
/I ,[_____], Goodyear duratrac 33x12.5r15s
I---I_ -olllllllo- 4" currie lift, savvy arms.
()_) ()_)—o-)_) Cragar or Procomp soft 8s pioneer deck with polk db series speakers