When you increase the width whether by doing a widebody, or pushing the wheel out more with lower offsets, if the given width of the tire is the same, should negative camber be increased or decreased to accommodate such a setup. Or possibly no change is necessary to take advantage of the setup?

 

if all you're doing is widening your track, the car will have more roll, so you'd want a teeny bit more camber. prolly not enough of a change to warrent re-alignment or anything.