Radius Arm Bushing cause vibration and grinding sound?

[rockgrabber]

Had a mystery vibration/grinding sound for couple weeks. Never consistent when it would occur and never could find the reason for it. About 2 miles from the house it came and only went away when I drove under 30mph. Called the whole family to join me in the search under my 1985 Bronco. My wife said that rubber thing is broken....here is what I found at the end of the passenger side radius arm. Do you agree this could be the culprit? Replacement comes in tomorrow and should know for certain.

 

[Bully Bob]

Absolutely..!!!

Mine blew out on two diff. rigs.  One while out 4x4'n. 

The noise was so strange & the "feel" really worried me to the point of taking the "easy" route back to civilization.

Same as you.., I found it once in the garage & crawled under.