Eric, here's some pics. The ones of the orange 76 are the actual rims before they were polished up so you can get an idea. The tires on the orange 76 were 31" BFG ATs in front and BFG MTs in back.
Here are some options:
Modern Radial on/off road
BF Goodrich All Terrain KO: 56149 35x12.50R16.5/D (rim width range 8.25-10.5)
http://www.bfgoodrichtires.com/tire-...ires#techspecs
Old school on/OFF road bias ply (my personal favorite - and what I plan to put on the 76 on steelies (the 9.50s))
STA Super Traxion 10-16.5LT (made specifically for the 8.25" rim)
STA Super Traxion 9.50-16.5LT (rim width range 6.75-8.25) (a slightly taller, slightly skinnier tire than the 10-16.5)
http://www.stausaonline.com/tires/sta-super-traxion/
Highway radial
Firestone TransForce HT 9.50-16.5 (rim width range 6.75-8.25)
http://www.firestonetire.com/tires/t.../transforce-ht (click on SPECS-see all)
1st 3 pics are the above tires in order, 4th is what they looked like with a 31" BFG AT T/A
Last pic is a 9.50-16.5 Super Traxion (mil cucv)
Yes, a little harder to find, but they are out there. I am removing these rims and going with steelies, but sticking with factory 16.5 diameter. Hope this helps!