**So could the black spots on the spindal where the bearings sit indicate that the bearings are slipping?? If it's just darker I don't think they are spinning. The steel is going to darken and harden at this point because of the heat. You should be able to tell if it's spinning. There will be grooves/scratches/etc to indicate this
**Is the any way to drive without the caliper/brakebads on to make sure the noise isnt comming from the brake pads arnt rubbing on the rotor. That sounds kinda scary, but I guess it could be done. You would need to plug the brake line off so you could remove the caliper. Don't say I told ya to do it though