Wide rear wheels/tires for obs

what is the widest rear wheel/tire combo i can run on a 91 c1500 i dont mind having to tub the rear fenders because they will probably be completely cut out anyway when i bag it

thanks

i have seen some ppl do a 20x10 with either 5 or 5.5 inch backspacing on a obs with only trimming or rolling the inner finder lips on the rear.

i just got some 17x9 wheels with 5in bs and i was told they would fit on all 4 corners but ill find out this weekend

thanks i think i might go with some widened steelies or something i like that look on the obs

what tire width would be good for 9"-10" ill decide on profile once i decide if im keeping the 15s or not

Also does anyone know the width and offset of the stock wheels

i run a 20x10 out back with 6.25" backspace. i'm bagged & my wheels tuck without narrowing the rearend. i did roll my fenders to be save & i have a watts link to make sure i don't get side to side motion.

I'm thinking of getting some pro comp 7033 wheels in 20x9 with 0 offset and 5" of backspacing

stock is a 15x7 with 4" of BS...

What about offset in mm I just wanted to compare them to the pro comps