With the center chucking is telling me you have too much air in it. I track my pss and autocross them and the only time I seen wear like that was when it got over 40 psi. I found I was getting the best wear at 38 hot in the front and 36 rear it wore even with the little michelin man on the side. This is with stock m sport suspension and stock camber. I getting more wear on the outside but not pass the little michelin man. Never chunked a pss with pressures 36-38 hot. Only when I got at 41 psi.
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