stock wheel offset and backspacing

[richparsonsx]

does anyone have the measurements for offset/backspacing on the stock wheels? I want to know what I have now in order to make a guess at what I want to go to

 

[joshd1971bronco]

I believe that the stock OEM wheels are generally thought to have a 3.5 inch BACKSPACING. This is different than offset.

Depending on the steering linkage setup and what year your front end is, you can get away with a little more (like up to 4 inches or so).

 

[shamu]

x2 on 3.5". 4" is too tight for the 76/77 factory disc brake set up