Well Mr. Westech, respectfully I beg to differ. In 1985 I purchased a new 1-ton single-rear-wheel K-30 GMC to elk hunt in Colorado & Wyoming. After the first hunting trip, I realized I didn't have enough ground clearance, so I installed a 4" lift kit. On the second trip the next year, I realized that the problem was lack of clearance under the axles. So I built a custom set of 20" Firestone split rims and mounted new 11.00/20 NDT on 'em. Had to trim the front fenders a bit, but they fit just fine. I changed the gearing to 5.13 to correct the RPM at highway speeds, and added a Trac-Loc in the dana 60 front chunk. The truck was unstoppable, and I drove it from Atlanta to Wyoming and back every year (and sometimes twice each year) for 10 years straight. The first set of NDT's lasted five years and 125,000 miles, and the second set the same. When I sold the truck in 1995 it had over 250,000 miles, still had its original wash job and was completely worn out. When I headed out on each trip I would set the cruise control on 70 or 75 and the NDT's perfomed flawlessly. On one trip to Montana in 1993 me and my hunting buddie kept the truck moving for 37 hours straight, stopping only for fuel and food. The fact that they were bias-ply had no effect whatsoever, except they would bump a little until they warmed up. I kept the truck properly aligned and maintained proper toe-in and inflation. If there was no cross-wind, I could turn loose of the steering wheel at 75 MPH and it would track perfectly straight. Without a doubt, the best tires I have ever run on a cross-country truck.
Now fast forward to 2011. I am currently rebuilding and restoring a rust-free 1984 M1028 with 12,338 original miles. You can do a search for my rebuild thread on SS "Kinda got carried away...". I have lifted the M1028 5" and, you guessed it, am installing those same custom 20" split rims and brand new 11.00/20 NDT bia-ply tires. I am finishing the truck now and plan to post plenty of photos in my rebuild thread when complete. But to whet your appetite, here's a photo of those wheels & tires from the front -