i have 31x10.5 Grabber mt's on 7" rims with aproximately the same backspacing as stock. (each wheel maybe .25" "further away" from the springs,so hardly any real change)
with a stock spring spoa(5"),and 2" shackle reverse also.very occasionally,when i'm backing up,and have the steering wheel cranked the lugs on a tire will rub a leaf spring.