I have that issue with every tire, when you live in a state with 2 curves and are throttle happy that center wears quick. 5700 miles showing cords on angel st. 6100 bald in the center on scorpion sync. I've considered trying a michelin sport touring tire, but other than life span, im pretty happy with the pirelli angel st.On my second rear Michelin pilot 3 and it is still wearing square in the middle and feathering on the sides
Michelin pilot power 3's -- on the rear tire same thing happened to mine around 5k