Backspacing and Offset - the never ending headache of wheel shopping

toolmanmike said
The 7's and 255's are real close. It would have to be a specially built wheel with no guarantee. I don't want to trim or roll the wheer lip.

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I want to run a 255/60/15” tire on the back of my 71 Dart like you. I currently have a 235/40-18 back there with a 18x8” wheel with a backspace of 4.5” and like you it’s right up to the fender lip especially on the driver side. But I do have a good inch and a half more space to the springs.