I have a problem that I need help with I have a Chevy equinox 2013 and my passenger back tire clicks while driving at speeds between 10km to 40km but you don't hear it after that... A guy great with vehicles said it doesn't sound like the bearings or brake pads and it's a constant click not a squeal or a really high pitched squeak and when it does do the click it's not really loud either but it's noticeable.... Does anyone have any ideas that could be wrong with my vehicle?

 

backing plate contacting the rotor?