Join Date: May 2012
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If your discs are grooved and scored, you should be looking to replace these as a matter of safety/good practice.
If your front bearings are quiet and there's no movement in them, then they should be good, it would take a huge amount of heat to melt the grease out.
A seized/stiff CV joint can cause vibration but you say it's coming from the rear.
Is the noise/vibration/resonance speed related?
I would be tempted to swap the front wheels to the rear to see if the symptoms are transferred with the change.
Currently in ice's garage:
2001 Espace 2.2dci, 2005 Espace 2.2dci, Renault Megane 1.6, Citroen Relay, Ford KA & Peugeot Vivacity 50cc (in pink) & 2007 Espace 2.2 dci