Buy them in 33's whatever you do. Come awhn you know you want too. You've already decided it's intended to go off road. Cut back the wheel wells and stuff um in. Your past the 31" tire stage, Don't compromise your off roadability. You'll get stuck that much less and not need the chains anyway.
98 uzj100. Factory rear-ARB front locked 4.88's. ARB Bull, Warn 9000, Irbis rear bumper, Slee sliders and belly pan. OME t-bars w/863 rears, HID, XM