My first post on this Forum. I did a search for Zafira wheel bearing noise and this post came up. As you posted back in Jan I guess you'll have had this fixed by now. I noticed this noise on my 57 reg Zaf diesel this week. The dealer just swapped the front and back wheels round and it seems to have come from nowhere. I haven't had it looked at yet. The car's going to have new brake discs this week so I'll see if it is still there after that's done.