I am beyond stumped with this one. Over the last month the road noise while driving has been getting worse. It is now to the point where I know there is something wrong, yet i can't seem to figure out what it is. The noise gets louder depending how fast I go and the pitch changes when turning to the right. I have tried swapping wheels to make sure it is not a wear issue and I have replaced both drivers side and the rear passenger wheel bearings and the noise has not changed. Any suggestions on what this could be would be appreciated. Thanks in advance.