redwing,
I have LT235/85R16 radials on my original 1954 3100 wheels. One set with tubes and one set without tubes. They have a high-profile narrow-look like the original 6.50x16" tires.
After adjusting/servicing the steering gear (and all steering system parts), and after doing the Shop Manual steering system adjustments, and after playing with the tire pressure, the truck steers and turns and tracks much better than it did with bias ply tires.
