8 Lug steel wheels

[PGSigns]

Here is what you need to do to help figure out what you can get under the truck. Jack it up and remove the tire. put a straight edge on the wheel mounting flange and use a tape measure to get the distance to the inner and outer wheel well at where you think the tire may be when on the ground. This gives you an idea of the room you have and where the tire needs to be in relation to the housing end. That will tell you what back spacing and tire width you need. You can go on places like tire rack and look up sizes and brands of tire and see the diameter, section and tread width and the recomended rim size. The section width is the important one. The side of the tire is what will rub most the time. A tire and wheel combo that fits may rub with another manufactures tire of the same size due to a wider section width. Her is a link to a tool for checking what will fit. You can make one out of aluminium angle that will do the same thing and fit your 8 lug housing. Will save you lots of time and trouble getting a wheel and tire that will fit.
Jimmy
https://www.jegs.com/i/Percy's/7...iABEgIkofD_BwE