16.5 has a reputation for loosing the bead when your aired down low but in a fullsize rig you most likely wont ever air down to there. i'm running 35x14.5 on a 16.5x14" rim (too wide, want to narrow it down to a 10" rim) thats a 1 piece wheel. on the street i'm running 35-40 psi and offroad i go down to 12-15psi, never lost a bead playing out on the rocks. balanced with bb's