I have a Gen4 that has had a humming/ buzzing nois in the front end for quite some time. I replaced the tires and thought it was just bad tires. I replaced tehm again and it is still there. It is a slight noise not really loud. I notice if I slightly turn the wheel to the right it gets louder and to the left a little it goes away. I have to me moving to hear this noise. I buggs me more than my wife. She is the one dirving it most. I want to say its been doing this for at least 40k miles. It isn't any worse than it was when we first noticed it. I have had people look at it and they don't see anything wrong. Now I never took it to Toyota. I have a lift in my garage. I checked everything out and it all looks fine. The CV boots are dry. I have no idea what this is.
