Does anyone know what the wheel offset needs to be to run 35/12.50r18's. I am looking to use 18 inch Pro comp 7036 with a 5 inch backspace. Will the tires rub?

 

For that setup it probably would not "rub". But we need to know more about your suspension setup to know for sure.

 

There is some backspacing info in both of the threads stuck right to the top of this modified section.

Since the same 'size' tire can be taller/shorter/narrower/wider based on which mfg or whatever, and lift heights vary, and fender choices vary, and specific builds vary - there isn't a one size fits all answer. But, a 4.5" backspace is a common recommendation for a 35x12.50 tire. (As the bs increases, the rim/tire moves further into the wheel well.)

 

I have a AEV 2.5 inch lift any everything else is stock Sahara. I am looking at bfg ko2 and pro comp 7036 with a 5 inch backspace.