Nitto 275 60r15 measurements?

Gonna need more backspace or more ride height...
Agreed, Lear springs will fix this issue. The wheel back space is under 4 inches.
This is how mine fit right now, new General springs (I didn't order 1" higher, but they sure look that way), and the fender lips aren't rolled. The picture's a little goofy, but there's 3/4" to the springs.

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It’s not the tire in question. But is it the same size and what rim do you have on there?