For a few months now i've had a groaning noise coming from the front driverside area. it gets louder with speed. I originally thought it was a wheel bearing since when i'd turn left, it would lessen, but when turning right putting more pressure on the left wheel, it got worse. replaced the bearing and it persisted. i noticed my tire had a bubble on the sidewall, so next thought was tire noise. new tires, properly aligned, and the noise continues.

Thoughts?