You are correct. The pictured wheel is not the one being discussed. That wheel in the diagram has a negative offset, so the backspacing would be less the the distance from the centerline to inner lip. The wheel being discussed - with a 7" total width and 4.625" backspace - would have the...
The tires are 315/75/16. I actually considered selling these and getting duratracs. And I don't have any action shots. I'm from Mississippi so the only action it sees anyway is a mud hole every now and then. No rock crawlin round here