I'm having the exact same symptoms. Moaning and groaning when going straight ahead, moaning and groaning when going to the left, quiet and peaceful when going to the right. I thought about just always driving to the right, but, after reading the other posts, I went out and jacked up both sides of the car. The right wheel seems reasonably tight, but the driver side (I guess that's the left) wobbles considerably. So, it seems to me that the problem is in the left wheel.
