My 2004 goat has 180K miles on it and has started to make a loud vibration that starts at about 35 mph and gets louder and worse as speed picks up. Above 55 mph the dome light starts to vibrate severely and you can feel it when you touch it. The vibration goes away completely when the car is steered to the right and get worse when steered to the left. I have already replaced both front wheel bearings, a bad right outer tie rod end and the drive shaft center bearing but the noise continues. I had a four wheel alignment done and that didn't help much. The shop told me it might be the rear end gears but I am skeptical. I thought about the rear wheel bearings but they are so hard and expensive to change and I don't know which side to do or both. I did notice a loud squeak coming from the left side rear when I take a hard right turn. upon inspection I see the left rear brake rotor is rubbing on the backing plate on the lower rear side. Maybe the left rear wheel bearing is failing. I looked for some complete rear wheel hubs on ebay with low mileage and I came up with some curious information. One used parts dealer has sold 33 LH rear complete used bearing hubs and 0 RH hubs. So I am thinking it is the LH side that always goes bad. I am going to order a LH complete rear hub assembly because I can replace it myself and because I won't have to remove and replace just the bearing. The seller says it has 61K on it and I can get it for about $150. I hope that takes care of my vibration and I though I would post this in case anybody has other ideas or experiences with this issue.