15" x 7" factory GN steel wheel backspacing?

[1KWIKSIX]

Does anyone know what the back spacing is on the stock factory steel GN wheels 15" x 7"

Thanks in advance

 

[626gn]

4"

 

[1986 Buick GX1]

4"

^^ X2
I measured mine when I got home.

4.0 in. on the dot.

 

[1KWIKSIX]

4"........thank you Gentlemen
Hmmm....looked on GBody parts website and looked at their aluminum 15" wheels which states it as 3.75" ?

Grand National Aluminum Wheels Rims Full Set 15" x 7" and 15" x 10", GBodyParts.com

gbodyparts.com

 

[1986 Buick GX1]

I haven't looked lately, but initially the backspacing numbers for the 18" & 19" GNX wheels were incorrect as pointed out in other threads.

 

[626gn]

I remember seeing some threads in the past saying they were 3.75 but recall measuring my GN wheels years ago when I had one and I believe they measured right at 4".