Quote:
If you weight them based upon the same math you used to make the 1 tire chart, not weight them based on proportioning the remaining weight, you'll get what you're looking for.

By adding the weight distribution for each of the other 3 tires, so that you have a chart with the weight on all 4 tires, individually....each arrived at independantly, you will see the rest of the picture...and, it will provide a given weight that you can use to standardize, so that the total weights on the 4 tires equals the total weight of the truck.
Except, TJ, that loading the other 3 tires doesn't matter, unless you're locked. If you're open, as soon as 1 loses traction, it's over for that axle, and it's not doing anything for you anymore.

And very, very rarely is it going to be the front axle that pulls you through something when the rear has no traction at all; that's why it's 4WD, and not 2WD... 'Cause you actually need all 4 of them, not just 2.