I think the factory specs for rear alignment on this vehicle must be wrong. I have experienced the same issue on my 2013 Fusion Hybrid. Front tires wear normally. Rear tires always wear the same...by 20,000 the sound from feathered inside edge is annoying. I faithfully rotated the tires at 5,000 intervals this last time per the advice of my tire guy. Now I have four worn tires...again, the rear always wear first. 20,000 miles ago, I also had the dealer address the rattle/knocking in the rear shock/strut mount (had to show them a YouTube video because "we can't duplicate the problem"). The top bracket mounts were replaced, and new shocks. I hoped that would correct the wear issue. It did not. I am going to try an alignment specialist shop in the future. I want to see if they can do some measurements and try to correct the issue instead of just plugging in the manufacturer's recommended specs. Must be in the camber.
