I've had this issue for a while now. About 20,000 miles. Thought it was the hubs. Just replaced them. That was expensive. $924.87 for oem hubs. The noise went away for a week. Now it's back and louder than ever. I'm confused the entire front end is new. Shocks, leaf springs, bushings, tie rods, ball joints, new seals on the axle, hubs, rotors, pads, 1 new caliper, steering stabilizers, and whatever else is a replaceable item. Everything was replaced with oem parts except shocks(bilstein), pads(ebc), tie rods ball joints bushings(moog), steering stabilizer (dual bilsteins). Not the tires those were just replaced 3 months ago. Hum is most noticeable after hitting bump in road between 35-45 mph and lasts till I come to a complete stop. or pulling a trailer while turning left at any speed above 10 mph. I'm stumped on this one. It's been to 2 different shops. One said it was the tires the other said its the hubs. Noise is definatly coming from the front. There is another hum from the rear but I know what that one is. The axle bearings going out(again!!).