You may have like a bent lower control arm too in the rear. I thought that my suspension was bad in the rear too and that that was why my tires were balding like as if I had negative camber. Once I got the new suspension on though the guy at the alignment shop tells me that my rear right lower control arm was bent so I had to replace that as well. Now everything seems to be all good. He's going to align it this Wednesday, and then I'll get a definite answer.