'65 Barracuda FS 14" vs 15" Rallye wheels

All '65 Formula S cars came with 14" x 5.5" wheels, that was part of the FS package. I agree having a little more wheel and less sidewall should help handling, reduce some sidewall flex, I like seeing a little more wheel too. This '65 has 15s, but I don't know what size.

'65 w 15s.jpg