Ok gang, I'm past 6600 miles now and am seeing feathering on the outside leading edge of my front tires.
(Rounded rear edge of the tread block, sharp, extended front edge, the edge that makes first contact with the road.) It's most pronounced on the drivers' side, ans most of my miles are solo. That outside corner is going to look like a sick goldfish pretty soon.
Feathering like that's usually a sign of excess toe-in, eh? Could also be hard cornering, which may be exacerbated by the tall skinny tires. I drive some twisty hills every day.
I'm also running 60 psi, which would make the tire 'stand on it's corner' more during a turn.
Anybody else seeing such? The rears are looking great. Of course, no rotations have been done.