70 Swinger wheel size?

I’ve been under the impression that my wheels were 14x5.5. I was told recently at a show that they should be 14x8. The back ones sure look thin with 245/60-14s on them! It’s a Swinger 340.
Like most things you hear at shows, that's B.S.- Darts came with 5.5s. As far as the 245/60s go, yeah, a 7 to 8 would be better.