That is true, the problem I ran into is budget and tire selection. Those wheels I have are Mustang replica wheels and are reasonably priced at $150.00 ea new. There is only two backspacing selections available. I'm currently as close as I can be to the outside fender lip and have trimmed it a bit to eliminate any rubbing.
The second problem is tire selection. I really wanted a tall tire, 28" would of been great. But as I mentioned above most of the 17"+ tires are in the 25" tall range that 285-40-18 is a great compromise of width and height. The wider tires would have been shorter in most cases or extremely expensive. The short wide tires look great from the back but a little odd from the side view on some of these older cars.