No, just get your alignment redone at the start of the season. Even if you drive on your autocross tires everyday, you'll wear them out autocrossing before the negative camber wears them out on the street.
I've gotten 25k out of S03s and 30k out of Dunlop M3s with 2+ degrees of camber in the rear. It's fine. But, I'd wait til spring to bother with it because you want minimal camber in the winter around here.
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FWD is the new AWD
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