the sounds are coming from the pasenger side rear tire area of my 06 WRX. its been making some very weird noises the last two days. the sounds come whenever they want to, it doesent matter if im going uphill, down hill, strait, throttle, no throttle, or turning... the sounds just happen whenever. ive been having poping metal sounds scratching and grinding sounds coming from the rear right side. when i drive it the left, (driver side) is a little cooler than the right side. checked all the fluids they are fine. we checked the break pads, they are fine. tried wiggling things around, nothing is loose. and torqued the wheels back on. its really hard to figure this out and what it could even be.... please help me out if u have any ideas.