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.
I have 2 1/2" of backspacing on 8-inch rims. It took an additional 1" spacer to clear my 33's. They will still rub very slightly at full turn on a steep sidehill situation. Not enough to worry about though.
I run 15x8 MRT beadlocks with 2 inch backspacing. I don't rub with my 33x12.50's. I have trimmed the fenders for extra insurance, but I didn't rub before I trimmed them. I run a stock spring SPOA with a Calmini shackle reverse. Hope this helps. ~Steve
PS--- The extra stability these wider tires/wheels add is like day and night. I used to run 32x9.50 TSL's, and it felt really unstable. Now it feels a lot more safe.
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