What is the backspacing / offset on 01-02 sport flower/coke cap wheels?

[Supermoney]

Trying to fit 285/75/16 on my 01-02 sport wheels but the tire shop said they can't even spin the tire because its rubbing the UCA so much. However others have reported that this wheel DOES work?

1. What is the backspacing / offset on this wheel?

 

[Bandit Runner]

I'm pretty sure the backspacing is 4.625 inches.

 

[Supermoney]

I'm pretty sure the backspacing is 4.625 inches.

That explains why my 285/75/16 BFG All Terrain KO2s won't fit then I guess.

I am going with 4" backspacing then