Good afternoon

I have an issue with my RRS07. After driving for a while down the motorway I get a very distinct rattle from the brakes. Makes the car judder. When this happens, I pull on to the hard shoulder. Turn the engine off and restart and then it goes back to normal.

What could this be. We had this happen a few months ago but on the occassion it semed that the calipers had ceased so we had to reneew the discs, calipers, pads and EPB shoes.

Any ideas?

Thanks in advance