Hey Scotty,
Bought a 2016 Ford Fusion Titanium trim 2 years ago. Rotated the tires about a month after purchase since the back tires looked better than the front. 3 - 4 months ago started developing a noise off the rear. A hunch told me that it was the tires and not the bearings, so bought 4 new ones problem solved, but the shop (Costco) said the rear tires had developed severe Tire Cupping. Could this come from the back? the Alignment seems to be fine
Thanks Mike
Though there may be other causes, tire cupping is often a symptom of worn shocks. The tires are "bouncing" which causes the uneven wear. Worn shocks are more important than you might think, as they screw up your braking, even if you have ABS
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@glen_stet
no bouncing other than the roads, shocks are clean all around. I do carry extra weight in the trunk (see above).
@michaelhanson
The extra weight alone could be the cause of this issue. Modern cars are specifically engineered for a certain weight and can easily cause them to become useless. Even if you replace the shocks it likely wouldn't solve your issue. Jusy need to take the weight out of the trunk and spread it around.
What tire brands did you buy and how many miles did you have on them when you saw the cupping?
How are the rear shocks on your car?
@yaser
Guessing they were the original Goodyears that came new. All the shocks seem to "look" new and in good shape, clean with no leaks. Noises started around 80K miles but the treads had not hit the wear indicator. The car still handles well and there is no bouncing. putting mostly highway miles on and I do have to carry about 100lbs of equipment in the trunk cold that be a simple answer.
So you drive 80k miles on the new tires?