S5E12 2023 Ducati Diavel V4 Pirelli Diablo Rosso 3 Tires worn out at 8,200 Miles 

I agree.

OK I'll put together a video discussing what I bought and from where as the stuff takes time to track down.

I think you may be seeing the transition between the two types of rubber compounds. The Pirelli Diablos have three zones. The center is hard rubber and the sides are the soft rubber for cornering. I can see on my tires as well since the rubber compound is different on the center.

When my tires are really worn I see the metal plies shining through in the center. You will definitely see the metal belts shining through the rubber.

@@SlowRiderDucatithank you really appreciate it!