there are plenty of guys that run 33x10.50s. my neighbor does. and you can also run 12.50's on a 8'' wide tire and that will help hold the bead a bit better if you were to ever air down.
next, when you go up to a wider tire, you have to set the centerline of the wheel farther away from the jeep(usually done with wheels with less backspacing
), but you can use wheel spacers. but anyways, that's what keeps the tires from rubbing on your stuffs. hth. and don't be afraid to ask anything. we've got some great guys around here.