Do I need to replace these bushings?, Need expert opinion on trailing arm replacement Options

[wanchaiwarrior]

A few months ago I started to hear this noise coming from the right rear of the car on left hand turns. The best description I have read was "it sounded like I was dragging bear cans." I also noticed the tire had been rubbing inside the wheel well in that corner.

After some reading, I assumed that the trailing arm bushings must be worn out and need replacement. The trailing arm bushing shaft nuts seems surprisingly NOT tight to me when I went to remove them. And upon inspection, the bushings look really good to me. There is also light metal shavings where the shaft goes through the mount.

Is it possible that it was just loose bushing shaft nuts that were allowing the movement, or is it more likely that the internal rubber on these bushings is shot and I'm only seeing the pretty exterior.

Before I go to all the trouble to burn these bushing off and replace them, I need some expert input.

Thanks.