tire size suggestion

i'm going with some 18x7.5 rims, what size tires does everyone recommend if i'm going to bag my truck. its an 86 b2000

I always run 215 35 18 but I like rubberbands. I usually run the smallest sidewall I can get my hands on. It all comes down to how your going to drive your truck and the quality of the roads it will be driven on.