I own a 2008 C5 2.0 litre diesel Exclusive saloon. When I first bought it (at 34000 miles) I too thought it had wheel bearing problems until I read all the C5 forums. When I purchased it, it had cheap Malaysian tyres fitted and I thought these might be causing the noise. As soon as I could, these were replaced with Michelins thinking that as these were what the car was designed to run on by Citroen the noise would be minimised. I found there was hardly any noticeable difference in the noise level. Driving over gravel dressed roads the Citroen is considerable noisier than my wifes Mini which is fitted with 17" run flat tyres! I have only owned hydraulic Citroens, GS, XM, Mark 1 C5 and all have been very quiet runners and I loved them all, which is why I bought this C5. What astonishes me is how Citroen could put a car on the market with such a fundamental design fault. Surely during development they must have noticed how noisy it was. I too share the sentiments of Jonesy and will looking to sell it in the new year, maybe I should change back to a late model Mk2 C5.