The sound that I hear is a wobble. Bent wheel? Bad tire? Bent rotor? Warped rotor? Bad axle? Whatever it is, it makes the sound really loudly at 55 and as I speed up the sound speeds up until eventually I’m going so fast that it doesn’t have enough time interval for me to hear it. I originally thought it was a bad tire tread or something to that effect but they say it all checks out. The funny thing is when they rotate my tires the noise/wobble doesn’t rotate, it stays in one spot.