jonnierock,
I've got a 09 flhtcu and I've got 12,500 on the tires. 407F and my front tire is cupping extremely bad. Been talking with people, and I called HD customer service today. I mentioned the cupping issue and said the magic word, safety.
Ref # was issued and it's my understanding that the 407's are being replaced with 408's.
I've also had a real issue with the rear suspension bottoming out. All service wants to do is check air pressure. I'm just under 200# and I'm running 42# of pressure and it still bottoms out. Again, called Milwaukee, and shocks are being replaced. Also asked to trace the parts as it's been over a week, and they have been on back-order. Sounds like they are going through a lot of these shocks some where.... I hope it's the shocks and not the swing arm, but, I'll find out..
Blue_Highway