Not sure, it's close I know 5" backspace 8 inch wide seems to stick out a bit *(which I like) . I believe the stock 16s are 7" wide and 5"+ backspace so they seem way in. Which I hate that look in a jeep..
here are the specs on mine:
http://www.jegs.com/p/American+Racing/857501/10002/-1
# Fuel Series 321 WheelBlack Painted Center & Machined Finish Lip
# Size: 16'' x 8''
# Bolt Circle: 5 x 4-1/2''
# Rear Spacing: 5''
# Offset: +12mm
I think they fit perfectly sticking out just enough. I could actually go even go a bit further out for that street look (maybe 0 offset), but I think any futher out and you can't fit a nice wide tire like I want
Next week I'm actually going to test 265/60/16s BFGs (28.5 x 10.5) on the rims and Pat. Everyone says they wont fit, but can't see how it's not going to, but I need to see it with my own eyes. I know (29.1 x 10.1) failed ever so slighly.. I'm counting on wide spliting up that .6 inch hight difference being just enough. I'm optimistic.
It's a tricky formula, but I think you can go wide so long as you stay in 60 and have less offset (less backspacing), go to 65 and anything over 245 wide will likely rub. People have fit 245/70 which rubs and maybe even badly depending on offset. Too much offset (less back spacing) and you end up rubbing inside in the spings and shock area. I think the magic number is
28.5 x 10 (maybe even 10.5) if you can push the rim out just a bit.
I'll document my findings and send pics.