I have the same noise form the rear, you can hear a grinding type noise every rotation of the tires so it's a slower grind at low speed and quick thumps at highway speed. I have a bit of shake at hwy speeds too almost like a slow wave of shaimmy from the front to the back of the car and through the steering wheel but I'm not sure the two are even related issues.

I have my car at the shop now and asked them to check the rear wheel bearings and front toires for any cupping and just check overall to see if they can figure out the issue(s). I will post what they tell me and if it fixes it once repaired.

Anyone have succes figuring out the isssue so I can direct the shop to anything else to look for?

Thanks