15x10 backspacing question

[ilandcruza]

hey im new to these forums and i just bought a 86 pickup ext cab.
i want 15x10 and ill probably run 31x12.50 tires on it but i was wondering what backspacing i would need so that it doesnt stick out too much. im gonna be using it for offroading and street and i dont wanna deal with cops.
i was also looking at the warn flares but not sure how far it will go out over the tires. any help appreciated thanks!

[93yota4x4]

the lower the backspacing the farther the wheel will stick out, so try about something close to 4"-4 1/4" . but you aint gotta quote me on that.