IV 2004 RRear wheel

I believe this is where the noise is coming from
I get a delayed tap noise when I hit the brakes. If I lift my foot off the brake and hit it again I might not get the noise. It seems forward momentum is need to "reset" what ever is making the noise.
Also.... Right turns at 25 mphs I can hear a rhythmic woob woob woob.

Accept for the tap noise the woob woob woob is hard to hear unless I have a passenger, more so if the passenger is in the rear.

I can't run this Prius into a dealer like I can in the states. I've had this Prius in the Republic of Panama since 2007. They just started selling IV models. This is possibly the 1st Prius in Panama

Now that I have my first real problem I need some suggestions of what my problem could be.

Wheel bearing?
Brake?
Suspension?

I had the pads replaced about 25,000 miles ago. There's 106,000 miles on the car.
I step on the rear bumper and bounce the car. The suspension sees stiff/normal. I don't hear any that might be loose.

 

Well as far as I can tell the edit feature isn't working so I'll just add a comment/correction
I guess this is a Gen II not IV