Nbs Wheel Offset Question

[Guest 007FL]

I tried the search.

I've seen the post about the warning from GM not to use '06-'07 wheels on NBS.

What is the stock offset on the standard wheels (16", 17", 20"). And how far from that can you go before you have fitment problems?

Tire Rack lists wheels for the '07 Sierra that vary from 15 to 20mm offset. They list the 275/55/20 as the recommended tire but I was thinking of going a little larger to eat up some os the space in the wheel wells.

[Zembonez]

My 20 inchers are 20x9 with a +30 offset and they fit great. Nice and flush. (without sticking out)

 

I don't have the figures on OEM wheels.