E30 Zone

I've got a little problem (random one, not always)

sometime, at the end of breaking (maybe half second before the car is not moving anymore) I heard a noise like dead pads on discs, except my pads are ok.
Does anyone have an idea?
I think maybe it's my front trailling arms silent bloc wich are tired...

slave cylinder on the brakes ?? if its leaking at all the fluid. have the brakes been bled lately at all m8 ??