Hi, I've had my 2005 400h for 2 years now, and have noticed a slight drone from the rear, not really heard at 75 mph, but heard more at about 50 mph, car has done 69k miles, I do mostly short journeys around town, when you don't really hear it too bad, but went on a trip last week, and after about 100 miles, came off motorway and hit a 50 mph limit and noticed the noise. Pulled over and one of the hubs was very slightly warmer than the other, Had al brake pads and parking brake shoes and cables renewed about 7k miles ago, So I'm suspecting a wheel bearing noise, Is it best to renew the hole hub assembly, or just the bearings, as the dealer is looking for over £300 per side, although they are on ebay for around £100 each for the hub assembly, Has anyone bought the cheaper ones, -are the inferior, what's the best make to buy. Many Thanks for any help you can give, cheers Gus.