Grinding noise from Rear passenger wheel area

[HotCarl]

Hey guys, so I have noticed a grinding sound coming from the back rear passenger side. This only happens when the truck is fully loaded with 5 people plus gear, heavy braking, and going around turns. I have not heard or noticed it when the rig has little loaded, no braking, nor turning. Running stock alloy 16" wheels, & Arctic Claw studded tires, same as in my sig pic.

I have a hunch that my back tire is rubbing on the frame where the mudflap is bolted to the wheel well.
Is this a common problem that others have had?
Any other guesses?

 

[SunlitComet]

most likely. I have a flap on the left that is bent forward and does the same thing to a body flap part when a hard right it with my broken suspension. It shall soon be fixed though.the spot that is rubbing will either be torn to S*** or look polished from all the rubbing.

 

[bowtiefreak]

yeah look for the rub mark and go from there...trim as needed.