14" Tire info/advice

All great old information here. I have 205/70/14's on 5.5" rallyes on my '65 Barracuda but they are kinda skinny and tall. Next time I buy tires I am thinking 215/60/14 or 225/60/14 on the same 5.5" rallyes. Maybe the wider for the back as I have fast ratio manual steering (16:1). I have read tire charts that say the largest you should go on a 5.5" is 205/60 but I've also read 215/60 is fine and Johnny Dart here says he had 235/60 is fine.