I don't think my rear wheels and tires would tuck. The front ones might, but the tire would be real damn close to the fender.
keep in mind those BFG tires are about 1" less in diameter than the stock 235/75R15, so that's additional 1/2" of clearance at the top. So that a tuck on a stock tire would be a gap with the BFG's.
I would stick to chart
@Aarong23 mentioned. Those are the absolute minimum offets/backspaces that "might" tuck, and I assume they would be right on the fender. When the chart says negative offset or higher it means less negative. As the offest goes positive, it moves the wheel more inside.
The offset is the distance the mating plane of the wheel to the rotor is to the center of the wheel. backspace is the distance from the mating plane to the inside rear lip of the wheel, and front space is to the front inside lip of the wheel. Usually, a true wheel width (outside edge to outside edge) is about 1" wider than the listed wheel width due to the bead lip thickness (about 1/2"). These are probably already figured in to the chart for the spacings listed on the chart.