Looking at picking up some new wheels, the ones that came on it are in kind of rough shape. They are both 12" rims which doesn't appear to be factory, but I like the fit with the 25x8 front and 25x10 rear tires so I'll probably keep those sizes. I was looking at the QuadBoss 12" steel rims since they are pretty cheap, but they only come in 12x7. Would there be an issue with these tire widths on those rims?

 

Going 3" wider on rears is pushing it but they should be OK. However the most important bit is hole centres and offset. Your rears will probably have the flange well away from the middle of the rim, fit wheels with a different offset, and the tyres may well hit the exhaust. Fronts are offset the other way, so a line through the centres of the ball joints would hit the ground in the middle of the tyre tread. Modern vehicle makers are a bit flexible about this rule, but are usually within an inch or two.

 

Yeah I was reading that 2+5 rear and 5+2 front is pretty standard for the solid axle units