Okay,

So the wheels I think I am going to put on are a tight fit up front with rubbing issues. I noticed that there are camber bolts available to run on our XB. I know if I run the rims and tires I am considering I am going to have to run some negative camber up front. What I need is some input from those who are running a negative camber up front and how much is okay to run and not chew up tires too bad?

it wil always chew your tires! TOE is what will make your tires really wear faster..

SO I would still take it to aligment to at least adjust the TOE. to make your tires last a little longer.