Thanks for the tips.

I had to get a flat fixed on the noisy wheel, so while the car was jacked up I checked the linkages:
- The plastic thing is well attached to the sway bar, but the whole thing did move a bit when I put pressure on it. Is this normal?
- I noticed that there is a bit (1/2 inch) of play in the right rear axle. Being on the side of the car, I could move the part between the two universal joints left and right, relative to the car, by that much. Is this normal?
- Finally, with the car on the ground, if I pull and push on the top of the tire, I hear the same noise as the one I hear while driving. This would indicate a bushings problem to me. Any idea pro or con?

Thanks for all the help

Nicolas