Definitely from lack of camber on the road course HPDE. Yep, the heel-toe is front to back feathering. After my autocross today, the wear pattern has started to normalize. I think the stock suspension just brutalizes the front tires on track days. I don't really have cupping, but the extreme outside tread border where it meets the wall has a pink finger width of grooving. I'm wondering if it's due to rolling over onto the stiff sidewall on the road course.
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2013 Cadillac V-Wagon, RIP Z
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