I have been doing a lot of reading lately about rim and wheel combos trying to see exactly how big I can go on tire size. I've gotten my decision down to two options:

1) 20x9 Ballistic Jesters with a +12 offset and 295/55/20 trail grapplers

2) 20x9 XD Revolver's with a +18 offset and 295/55/20 trail grapplers

Would anyone be able to help me and tell me how much the each option will stick out past the fender (if at all) with the offsets above? I have not been able to grasp this concept. I know how the +, - and 0 works just not as to how far they actually move the wheel in their respective direction. Thanks in advance for any help.

BTW if needed I have a 2011 silverado crew crab 2wd with the tow package.