I have this whirring noise coming from front right tyre area. It isnt really loud on rough road surfaces but you can easily hear it on very nice smooth tarmac roads. It sounds exactly like a wheel bearing sort of noise where the faster you go the more whirring occurs. I took it into Merc yesterday and they said it was my inner edge on my front tyres that was causing the noise because they have worn unevenly on the inner edge (not across the tyre). They recommended new tyres of course Does that sound right to you guys ???