Wheel offset help****

[Dentguy]

So I ordered last week and billet specialties Bonneville G wheels and they called back yesterday to say with my measurements that they recommend a 6.25 backspacing. I said they were nuts.
Truck is a 67 with stock disc brake conversion off of I think a 71. Lowered with ece spindles and Hotchkis springs. Top of tires are flush with wheel well. No tuck. My current wheels are 20x8.5 with a 4.75 backspacing and a 0 offset.

I have never seen any trucks offset differ from 4.50-5.50 on almost all of them. I got frustrated and said to build them at 4.75 like my current Ridler wheel. Tires are 255/40. But I'm nervous as sh#t I'm going to have 2 front wheels worth $2000 that are going to be mounted on my wall.



Any help is greatly appreciated. I'm losing a little sleep. And I've measured it multiple times. Mounting area to inside of outer fender is 5". Mounting area to inner fender is 14".
Thanks again.
Doug

[Dentguy]

I prefer the wheels as flush to the outside as safely possible. Current 4.75 is pretty good, but wondering how Billet Specialties is coming up with 6.25 backspacing.
Thanks fellas.

[XwalkerX]

how wide are the wheels youre ordering?

[Dentguy]

Same at 20x8.5
I should have included that info

[Dentguy]

Current set up
20x8.5 with 4.75 backspacing

[Dentguy]

Another view
255/40/20

[XwalkerX]

yeah they are crazy wanting to add another 1.5" of backspace on the same size wheels

[XwalkerX]

if anything I would take out backspace and push them further out

[Dentguy]

Problem solved. Disregard
Thanks fellas.

[Dentguy]

We're all good. At 4.75.
Was a miscommunication and a measurement.
Thanks guys.

[lolife99]

Be careful throwing around backspace numbers and comparing to other trucks.
Backspacing is directly related to wheel WIDTH.
And these trucks have too many varibles to just go with what someone else has.
Plus there are two different 1/2-ton rearend widths.
And what I think looks good,.... someone else may not.
Wheels cost too much to make mistakes.
Good luck.