Recently purchased a new set of nitto nt555 and put off an alignment for about 1500 miles.rotated my tires and the right rear shows significant wear..
Got an alignment done Saturday and rear specs are
toe left rear: -.15
Toe right rear:- .48
Camber left rear: -2.3
Camber right rear: -3.6
Toe has been adjusted to "0" all four corners but wondering if I need a rear camber kit with that much negative camber although toe plays the main role role in tire wear?

 

You should...I have the ingalls installed and have the rear at -1.2

 

With those specs, yes.

 

Yes, you should def get a camber kit anything over -1.5" inches especially when both the right and left rear aren't even. I did -1 on the rear after installation, if you are dropped,not rubbing and aren't going any lower i would recommend the same.. If you chose to do the front camber kit you should have the camber set close to the same or slightly less as the rear as set.