My 06 in Va rusting over the wheels now for about 3-4 years. Just bubbles at first now worse. It’s a design flaw, doesn’t rust anyplace on the fender other than there, I’ve looked at many trucks. There is a 16” brace from inner part to the fender lip that holds the ‘rusting’ agent lol anyway once I cut out the bad section that BRACE will be removed so NOTHING will collect up there. Why it needs a brace is beyond me.