Scirocco Central

I'm getting a rumbling noise from the rear, rear wheel bearings replaced, new disks and pads, new tyres on existing rims then swapped for different wheels and the noise is still there.

The noise changes volume for different road surfaces, smooth road you can only just hear it, rough road surface it's really loud. Any ideas of anything else I can check? It's deffiently not saw tooth as I've had theee diff manufactures tyres on and a new set!

Could be your bushes? Sounds like an odd one as you've tried all the variables. Have you checked thr tyre to make sure there isn't anything embedded in there that could be causing the noise?