Widest tire on a MOAB - 315?

[Taurian]

Are 315's the widest I can go on the stock rim? Picking up a MOAB and am thinking about Ridge Grapplers (90% road, 10% sand), and would like to keep the stock rims. 50-50 on a Mopar 2" lift, but have been considering the 315's with 1.75" spacers. Any pics of 315's would be helpful, or other options. Thanks!

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[mwilk012]

The stock wheels are quite narrow, 7.5” I believe. 315mm or 12.50 are about as wide as you can safely put on them. Some tire shops may not like those sizes either, but they work fine.