I ran the stocks for a while with spacers. The stock wheel only has 6.25 or so of backspace. With the wider tire you need spacers to push the wheel out. With 1.5 spacers, it be around 4.5-4.75 of back space that's recommended.
2007 Rubicon/Rock Krawler TR 2.5 coils/rear TB/Rancho 9000 31/32XL shocks/Teraflex monster TB/Synergy highsteer,tie rod, ball joints/Hankook MT 315-75-16 on Level 8 ZX's/MC front SB links/Rancho geo brackets & shocks/Fox ATS stabilizer/Adams front DS/Artec front armor w/ Currie upper bushings=Frankinjeep from hell.