What tire? It really varies based on tire tread and style. Some people have managed to fit them without spacers. Your best bet would be spacers, new wheels, or a narrower tire.
2006 Black WK, Modified OME HD ~3.5'', Bilstein 5100's, 1.5" Wheel Spacers, Black JK Moabs, 285/70/R17 Duratracs, 7W Reverse LED's, tow hooks, 2 Hella 500ff's behind grill, Expanded sheet metal grill, ORT badge, Tail light guards, Firestik 3', Aux. input, Black housing headlights, Stingray roof basket, 2 Hella 500ffs on roof rack, 18% tint.