Slight vibration when turning slightly left (JE)

Guys,

I've got a tiny vibration starting when I turn the wheel slightly to the left at speed. Think of it as going around a very slight left hand long sweeping corner. I do that and I get this very small "yanking" feeling in the steering wheel, along with a very faint noise, and vibration in the car. I can feel it and hear it from the passenger seat too when my girlfriend is driving the car. It's more of a mechanical noise than an "unbalanced" noise.

I'd like to get this one diagnosed before it gets too serious/expensive.

CV joint..? Wheel bearing?