Eh, just had to look em up.
Going fro your 11.2x28's to 14.9x28's, you went from 47" diameter to 53.8" diameter. +6.8" and gained 3.3" on static load radius
Goign from my 13.6x28's to 23.1x26's, I go from 51.6" diameter to 62.4" +10.8" and gained 4.6 no the static load radius.
Yea, they're big.
No to figure out my lug-bolt issues. Not having much luck. I need a bolt with a bigger head. I am not even sure the standard 5/8" bolts with a 1" head is going to be as big as I want. There seems to be a whole ton of different lug nuts. Just looking at nuts and not studs.......a 5/8"-18 takes a 1" wrench standard. But then you look at the fords. (N's and hundred series etc), and they are 5/8" studs, but use an oversized 1-1/8" headed nut.....But cant seem to find any oversized stuff in the way of bolts.....
I am thinking about just getting 5/8" studs, oversized nuts, and pressing in studs.