I currently have a 2013 JKUR - 2.5" AEV lift - 35" BFG KM2"s on stock wheels. I have great clearance everywhere except the control arms. I rub with turning and some points in articulated wheeling.
What backspacing will work with out wheel spacers? Will 5" be sufficient. Anyone with actual experience please help!!
Pics would be great too!

 

Or to make it easier, will the 17" KMC XD Cranks work? They have 5" backspacing.

 

i went 4.5 with my 35s

 

stock wheels have 6.25, so with the 1.5" spacer its at 4.75". That works for most people, but I would recommend anything with 4.5" or lower

 

I am running 4.75 back spacing with a 0offset and 35x12.50 with 2.5bb and have no issues

 

You definately don't want more than 5 inches of backspacing.