3" inboard wheel backspacing

I'm running 29x12.5 15LT Sportsman Pro's.

The wheels are 15x10 with a 7.5 inch backspacing, but the sidewalls are 12.5" if I were to put a straight edge on each sidewall and measure from each point.

I have a few pics of the space between the spring to tire, and wheel lip to tire.
I also have the forward portion of the wheel opening moved forward 1.5 inches.
This keeps the rear tires from crowding the front portion of the wheel opening and rubbing.






This pic was taken before I installed the 1.5" lowering blocks on the springs.