Running a 2013 3.8 Genesis with 1500 miles on it and started to feel slight vibration on the brakes as if something is brushing against it. The issue is not consistent hence difficult to reproduce. Took it to the dealer last week they did not find anything wrong. Surprisingly haven't had the vibrations for good 4 days now but its the accelerator which gives slight vibrations mostly felt while driving on the freeway, thought it was the speaker but its not. Wonder if dealer did something the last time it was checked for brake vibrations. Did anyone had this issue before?