Camber kits (and poor design)

[Zdster]

whats the best rear camber kit for DC5? my sister's car has crazy negative camber and it chews through tires like nothing else...

I wouldnt. I would recommend that she gets an alignment done and make sure that the 'toe' specs are set as close as possible to zero. As said previously, camber should not cause you to eat through tires.