I have a 1969 EB with full width axles and may be taking it with me to New Jersey for a a few years. I'd like to avoid putting on gigantic fender flares and was wondering how much back spacing is too much to suck the tires under normal flares like Gorilla Warflares.

I believe the wheels I have right now are 4.5-5 inches of back spacing. My 36x12.5 on 15x8 rims stick out about 4 inches from the body still. Is it just ridiculous to go with any more backspacing than that, or is it even possible?

TIA

More backspacing pushes the tires farther out, which you don't want. You want rims with less backspace.

How to measure and an EB on full widths with stock H1s that have 7" of backspace (forgot who gave me the pic):

Now I'm confused, I thought more backspacing meant more space from the WMS to the inner lip which would suck the tire in. So if 7" of backspacing sucks the tires more than 4" of backspacing in then is the first guy to reply wrong?

You are both confusing backspace with offset, they are different.

More backspacing pushes the tires farther out, which you don't want. You want rims with less backspace.You got it backwards. Either that, or you meant to say "offset" and instead said "backspacing".

More backspacing is going to pull the wheels under the truck. Less backspacing is going to push them out.

so, by sucking the tires in more (sounds like I'd need 8-9 inches of backspacing) what issues if any will I face? with a disc-braked 77 f150 front axle and rear disks will I get away with a 15 inch rim with that much backspacing or do I need to step up to 16" ?

so, by sucking the tires in more (sounds like I'd need 8-9 inches of backspacing) what issues if any will I face? with a disc-braked 77 f150 front axle and rear disks will I get away with a 15 inch rim with that much backspacing or do I need to step up to 16" ?

I don't know if it would fit but I don't think you would ever find such a critter, unless you run drw rims.

I'm running 3.5" of BS on full width 1 tons - damn thing is hella wide. Good thing it is a trailer queen...
http://i66.photobucket.com/albums/h250/D3thM3tal/1974%20Bronco/1%20Ton%20Swap/th_DSCI0190.jpg (http://i66.photobucket.com/albums/h250/D3thM3tal/1974%20Bronco/1%20Ton%20Swap/DSCI0190.jpg)http://i66.photobucket.com/albums/h250/D3thM3tal/1974%20Bronco/1%20Ton%20Swap/th_DSCI0247-1.jpg (http://i66.photobucket.com/albums/h250/D3thM3tal/1974%20Bronco/1%20Ton%20Swap/DSCI0247-1.jpg)

Obviously not finished in it's current stage, still need to cut the fenders among other things...

FUck, you guys can argue anything, WE ALL KNOW What he means....
Anyway, go measure yours. A 15 inch aftermarket wheel with 4-5 inches of back spacing is pretty rare. Most are in the 3.5 - 3.75 range.
Do to the fact a Full width D44 is *About* 5 inches wider then stock EB, you should be looking for wheels in the 5 ish back spacing range, and I think with 15 inch wheels they would hit your kunckles.

More backspacing pushes the tires farther out, which you don't want. You want rims with less backspace.

I screwed up, don't know what I was thinking. I got it backwards.