Wheel Offset downside??

Is there a off-roading downside to wheel offset? Is there any stability issue that might arise from light to medium offroading in a setup like wormgod has

http://wormgod.8m.com/Images/Ebony/vx10.JPG

or is somthing like daver has better for offroading?

http://www.vehicross.info/gallery/da...0112cp-640.jpg

I know tires make a difference, just interested in wheel info. Will the amount of offset reduce the stability of the truck while offroading? Or is it basically anything you can get to fit will really work and there really wont be a downside either way?

looks like the top one. and i don't think i'd ever take it off-raoding with that wheel set. 16's to 18's are ok. the others are too expensive so would you really want to go off-roading with them? and you would not get enough rubber to keep the rims safe, especially if you have to let some of the air out of the tires.