I am looking at a wheel for my truck. I am thinking of purchasing a new wheel that is out there, my question is...will they fit?

Wheel is a 20x9 with a -12 offset.
Tires are the same ones I have now. 33.x12.50x20 Cooper STT's

How much farther than stock will they stick out...from the factory 20's and will they rub?

AS 2.5 up front and I have all the clearance in the world right now, but understand the wheel is an aggressive offset.

 

Do you happen to know the backspacing on that wheel?

 

4.5 I believe

 

A 9 inch wide wheel with 4.5 inches of bs will stick out 2.5 inches farther than the oem 17's and 18's. I believe they would stick out 1.5 inches farther than the OEM 20's.

 

Do you believe they would rub at full lock? I know a lot of guys ran those Mazzi Hulks which I believe to be a 20x10 wheel with 4.5 backspacing.

 

confirmed 4.5 backspacing

 

You should be fine.