what is the stock backspacing on a 1994 f150 and does the rim size such as 5x5.5 tell the backspacing? Thanks.

 

Im not sure what the stock backspacing is. Backspacing (if im correct) is the distance between the inside mounting surface (lug holes) and the inside lip of the rim. I think its usually in inches, and the smaller the number, the more "deep dish" it will be. So if you want them to stick out farther go for a lower number and vice versa.