What wheel width will fit 1960 Suburban

[MASTERBrian]

I'm staying with the 6 lug wheels and for now I'm running the stock rear differential, but may have to upgrade to newer, so trying to decide what route to go on wheels.

Currently, I have 15 x 8's, the tires are 31x10's, but they are old and crusty and thus have to go. I also have no clue how they sit with the truck lowered as that's not finished yet. I'll be 2-1/2" drop spindles up front with 4" HD coils in the rear. If that isn't low enough, I might look into a short block in the rear, we'll see. I don't want to get into having to notch it. Once I get the rear set right I'll turn the torsion bars to get a slight slope to the front.

I like the look of the tire coming closer to the edge of the rear fender and I like a bit wider rear tire. I've been thinking of running 10" wide wheels, but curious how they fit and I also wonder if that's a lot harder on my rear diff. Would I be better just running spacers to get the wheel/tire pushed out a bit and possibly run a wider tire for the rear?