dfw_05gx470

Hi everyone, We have an '05 GX470 (approx 105K miles) that started to make a clicking noise from the passenger side back wheel. The noise is very noticeable with the windows down. The noise increases with the car increasing speed. I checked and did not find any nails embedded in the tire. I can't determine if it is the brake or bearing. If you have any suggestions or tips, I am all eyes and ears. Thanks in advance from the DFW area.