Biggest tires that will fit a 2wd 1997 dodge ram 1500?

i want to put all terrain tires on my truck and need to know what will fit, it has a 2 inch leveling kit. it has pretty decent ground clearance for a 2wd and i wont be taking it through real deep mud mostly just easy off road trails through the woods. so i basically want to fill up the wheel wells with more tire and good tread all terrains. but what is the best combination tire and wheel size for this thanks. i also dont want any fancy looking huge chrome rims. just some normal sized black rims. i might need to get the stock rims and paint them black.