I have been following the 33/12.5/15 discussion thread for months. I'd really like to get some GY duratracs and wheels but I want, as much as possible, to keep the tire under the stock fender/flare. This means I need more back spacing than most stock wheels offer, but I don't know how much can be tolerated without causing other troubles. I have a 08 wrangler, 2 dr, with an AEV 3.5" lift kit, winch, bilstein shocks, etc. The stock 17's with GYMT's 255/75/17 fit fine, with no problems and have lots of Back Spacing so the stock wheel/tire is clearly under the fender.
The 15" wheels all come with 4.5" BS max, most have 3.5" BS and will cause the tire to extend about 2" outside the fender. I'm hoping to find a 15" wheel/tire combo, 33" Outside Diameter, that will fit. A 34" tire would be find too. I'm not that concerned about the 12.5. 11.5 would be ok, even 10.5... whatever.
There must be 1000's of geezers looking for this setup....?