I run 215-85R16's on my '50 with stock 16" rims without tubes. They hold air fine and I do not have any clearance issues. The difference between these and the bias ply I used to run was dramatic in my opinion. I especially like not having unscheduled lane changes on grooved pavement.
Steve O

1950 Chevy 3100
261, 4 speed
Purchased 1977

1964 Pontiac Lemans Convert