What is the rear camber spec?

[r6vr6]

Yeah so my front tires are toast on the outside and my rears are toast on the inside with 11K mi on the odo. 2012 3.5i SAV

I am gathering up info on what to tell the alignment shop to set the front toe (have this from other posts) and rear camber (need that).

So what is the spec and what have others had it adjusted at to minimize wear? Obvisouly I need it to be more positive than it is but what is a good value to extend the tire wear without killing the handling?

Thanks in advance.