My S3 has been making this weird drone noise at around 15-20mph for a little while now. It sounds like a wheel bearing but I've had them checked and they are fine apparently. I notice it more as I'm slowing down to stop, It does it without the breaks applied so I've ruled them out. But recently It's doing it at normal road speeds, mainly at 60-65mph I notice it alot. As the wheel bearings are apparently ok the only thing I can think of is a drive shaft maybe, as I know the gaiter is split on the n/s and could well be quite dry by now? Could a drive shaft make this drone noise? Starting to annoy me now and I really want to get it sorted. The noise is defo from the front end I think, so I've ruled a noisy rear diff out as well.
Any help would be much appreciated, thanks.