OK, then it isn't the brake pedal. That would make noise all the time not just while moving at speed. Next? When it makes the noise does it change when you speed up or if you turn?
Another thing would be for you to visit the dealer and take the service writer or tech with you and hopefully demonstrate the sound for them. It could be something simple like the brakes are not fully seated or similar.
If you post some video on youtube or facebook of the sound and drop a link in your reply it might help.
Monday, March 27th, 2017 AT 5:08 PM