It depends from person to person. If you want better tire wear, go by the book, if you want to have slightly better handling but slightly more tire wear you can go with more negative camber. The fronts have no camber adjustably but for the rear I say go -2.0 camber for even handling/tire wear ratio.
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87' Honda Civic Hatchback: Kaput @ 288,000 miles, 90' Toyota Celica: Kaput @ 175,000 miles, 93' Mitsubishi 3000GT VR4: Kaput @ 138,000 miles, 06' Scion Tc: Traded in @ 64,000 miles, 10' Nissan 370z: Traded in @ 25,000 miles, 12' Subaru Impreza Sti: Current.
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