HOLY F, glad I found this. I posted this same thing over at Acurazine.
I've had the Advance for 2 weeks now. I test drove a Tech pkg one and no problems....that one I even took on the interstate to get up to 65-70 mph. Upon taking delivery of my Advance which had 8 miles, I didn't test drive on Interstate, b/c to be honest, I never EXPECTED to hear this type of DRONING/Humming noise. I get it at 65 mph....that's when it kicks in, esp if I let go of the gas and let it "cruise" on the interstate. It's is so freaking loud.....gives me a splitting headache after a few minutes. I turn up the radio and it barely drowns it out....I can't do that w/ the kids in the car.
Once I go above 70, the noise disappears. It's God awful!!! I have a service appt tomorrow at my dealer. Doing some overall research, these are some possible culprits:. 1. Bad Wheel Bearings....strange b/c this is brand new car, but it can happen. 2. Unbalanced wheel(s) 3. Bad tires. I'm used to Michelins, even though they suck for tread longetivity. These are new Bridgestone Alenzas on my MDX and I wonder if they are just loud tires.
I'm coming from a much older 2008 MDX, but as many quirks as that car had, it never sound so damn loud on the road EVER!!!!
Please share any findings. I'll do the same. I'm not nuts, b/c my wife hear's the same noise as well and it's pissing her off that a 60K car does THAT, lol.....