wheels

Those would stick out about 1/4" more than the 17" Eskies in your sig pic. They probably won't fit in the back unless you flare your bedsides out a little. They might fit in the front if you get enough camber to pull them in before they hit the fenders.

Did you write these calculators, or just find them online? If you can tweak them they both need one step added in.
The Offset to Backspacing should be:
(offset(a)/25.44) + [(wheel width(b)/2)+.5]

The Backspacing to Offset should be:
|backspacing(a) - [(wheel width(b)/2)+.5]|*25.44

I wrote them, why are you adding the .5? Are you compensating for the thickness of mounting flange?

Yup, exactly. The backspacing includes it, but the offset does not.

The offset includes it also. I double checked though." target="_blank

The offset is just the difference between wheel mounting surface and wheel centerline. The mounting lip is not included in that.

Backspacing is the distance from wheel mounting surface to back edge of wheel; which is offset+half of wheel width+1/2" mounting lip, since the mounting lip width isn't counted in measured wheel width.

I don't know what I was thinking I think I was having a brain fart lol sometimes you just have to keep after me. I'll fix the calculators, thanks for pointing that out!

lol no problem man. I just wanted to make sure the calculators turned out correct numbers for everyone.

Thanks again for pointing that out man, it should be fixed now but I need a second pair of eyes to double check my math. Are you up for it? lol

The Offset to Backspacing calc is working great now.

The Backspacing to Offset either needs another set of parantheses so the .5 is added to the width/2 before it's subtracted from the backspacing, or easier, just change it to - .5 instead of + .5.

That was my fault when I reposted the equations for you. I showed it the way with an extra set of parantheses which just complicates it for no reason.