Transmission noise
 

Hi, I have a 2001 Hyundai Tiburon, at 50+ MPH it makes a rumbling noise. It happens when the car is going in a straight line or when I turn the wheel to the right. When I turn the wheel to the left even slightly it stops. I thought it might be a wheel bearing so I jacked up the car and couldn't feel any play on any of the wheels or hear anything out of the ordinary when I span them. Would a CV Joint make this kind of noise? I have tried driving the car slowly on a tight lock, but can't hear any clicking that would indicate a bad joint, any ideas would be appreciated.