Reaper tire pressure

Need more stagger with the reapers. 1/2 in the rear and 1 1/8 in the front. Would it hurt to go 1/2 wider rims on the left front and left rear to get a little more stagger and i wonder how much difference it would make. I am trying to resize them. It seems Kinetic karts use a good bit of rear stagger.
Lil Dega i either the Box Stock at 350lbs or the Silver a d Spark at 375lbs. Thinking about staying in Box Stock. I just hate to add 45lbs.
Just wonder if a little wider rim would hurt the tire. Just don't know if i can swell the outside tires and shrink the inside that much.