You can see the dust boot when you move your tire all the way to the left or right. It looks like a black bellow. its plastic and rubs against the springs on mine. They lubed it up and now I don't have the noise anymore.
2012 Tuxedo Black 5-DR Hatchback Titanium|2.0L I4 GDI Engine|6-SPD Auto Transmission (SST)|18" Alloy Wheels|MFT V3.0.2