Does rim width affect what tire size I can use

Pa's Toy said
Thank you all for your input....it helps and looks like I'm set for both tire sizes...one last question....any fitment issues with running the 205's versus the 185's on a 64 Barraucda with stock steering and suspension ?

You should be fine with those front tires. I'm running 215/65-15's on the front of my 66 Valiant with no issues whatsoever.