OEM Z71 Offset / Backspacing?

[NoleLife]

What is the OEM offset / backspacing on the Z71 18s?

 

Doing a Zone 4.5" in lift and going to aftermarket 20s (20x9) but I would like to maintain the same stance as stock, or at least close as possible. I do not want a lot of tire sticking out kicking up crap on the side of the truck, damaging the paint.

 

Looking at some trucks with aftermarket tires/wheels, it looks like 0 offset sticks out a bit, so probably +24 is OEM?

[tootall87]

+27 I believe is the right answer.

[newdude]

2014+up 18" wheel is +24MM. Spec is right from GM.