Biggest/tallest tire on 15x4.5

I have a 65’barracuda that has a beautiful set of sbp 15x4.5 steelies. I’m wondering which size tires will work to give me the widest and tallest option? I’m using the wheels all away around until I can acquire something wider for the rear. I heard 215/65/15 would be ok but wasn’t sure about that info? Appreciate the help.