Noise from front passenger side tire area on 2006 Ford Explorer

When turning to the right I hear a thumping noise from front passenger side tire area What's the possible cause? Is it still safe to drive?

To answer this question, I would need to know some more information. Is the tires in good shape? A separated tire could cause a thumping noise. Is the vehicle a 4x4? If so, which type? (All wheel drive or manual- Hi and low) A 4x4 system that is engaging by itself could cause this noise. At what speeds does the noise occur?
Tires are in good shape. Vehcle is all wheel drive 4 X 4. I tend to hear the noise at all speeds but notice it more at slower speeds as when exiting a highway ramp or taking a right hand turn,