You can run it but it will be tight on the outside, especially if your fender lips haven't been trimmed or rolled.
I have run a 255/60/15 on S10 15x7 wheels with 4" backspacing, but my outer lips were trimmed long ago and it still nearly rubbed.
A 15x8 wheel with 5" backspacing will center the wheel in the opening as long as the rear diff is still the early one (narrower than 68-72.)
I run a 15x8 at the track with a 28x9" tire, which has a section width of about 11.25" on a 5" backspace and that's as much as I can fit on my 64.
I've measured my wheelwells every way possible so if there's anything more I can help with, just ask.
Devin
I have run a 255/60/15 on S10 15x7 wheels with 4" backspacing, but my outer lips were trimmed long ago and it still nearly rubbed.
A 15x8 wheel with 5" backspacing will center the wheel in the opening as long as the rear diff is still the early one (narrower than 68-72.)
I run a 15x8 at the track with a 28x9" tire, which has a section width of about 11.25" on a 5" backspace and that's as much as I can fit on my 64.
I've measured my wheelwells every way possible so if there's anything more I can help with, just ask.
Devin