BMW E60 - excessive road noise

[thebullettrain]

When driving - particularly at low speeds - I can hear a strange noise. At first I thought it was the tyres but I don't anymore; it's a kind of a thudding sound ( a bit like a heart beat!).

Any suggestions on what this could be? Suggestions, recommendations and general thoughts would be welcome.

[thebullettrain]

Bump

[gizlaroc]

Have you actually checked the tyres properly?

[RDMcG]

Are they run flats?....I had some on my 645 a few years ago and the damn thing rain like it had wheels made of cement. I dumped them and put on regular performance tires. The difference was unbelievable.

[jontysafe]

I thought my E63 was haunted, all sorts of very strange noises. Very freaky at night, sounded like someone tapping on the roof. Water had got into the amp in the boot.....trip to BMW to sort all under warranty.

[thebullettrain]

I check the tyre pressure every week and yes they are run flats too.