Can any one point me at what could cause this sound,
On heavy braking I have this strange rumble/hum sound and cant figure out where its from!?

All the pads have plenty of meat left

Any ideas? thanks

Are the disks ok ?

As above - check the inboard faces of the discs as they can suffer with heavy corrosion. Past: FL2 TD4 HSE Auto
Evoque SD4 Dynamic Lux Auto
Present: Audi A3 S Line.

If it is the discs they are relatively cheap and even I managed to throw them on myself

Will try but the noise seems to come and go! One trip they rumble next its gone,

Replaced rear discs as they had corrosion but noise still there!

I thought the fronts looked ok but maybe they are warped

Wouldn’t warped discs cause vibration through the car when the brakes were applied? The frequency of the shudder would be dependant on speed. Is there any tendency for the abs to kick in when braking? I’d have thought that a warped disc might cause the the brakes to try to release on that wheel. I don’t know how sensitive to speed difference at the wheel the abs is. Bearings tend to whine or drone. Droning from wheel and diff bearings can come and go. Rumbling suggests low frequency, something moving slower.

Were the pads (and discs) good quality OEM supplier? Regards

David

Lovely i6 has now gone, but not me......

Please let me know if anything in my post offends you, as I may wish to offend you again......

Warped discs would definitely notice, certainly at higher speeds, with shaking in the steering. Are your tyres ok?

Space wrote:

Can any one point me at what could cause this sound,
On heavy braking I have this strange rumble/hum sound and cant figure out where its from!?

All the pads have plenty of meat left

Any ideas? thanks