1970 charger front rim 15x7…what backspace?

[TexasRoadRunner68]

Will 3.5” BS fit on these cars? Trying to figure out what I need.

 

[6PKRTSE]

Most of all of my rims are 4-1/2" back space. 3-1/2" may rub on the fender wheel well front corner depending how your car sits.

 

[davek]

I have 15 x 8 on the front with 4bs 70 Super Bee

 

[Kern Dog]

Most of all of my rims are 4-1/2" back space. 3-1/2" may rub on the fender wheel well front corner depending how your car sits.

I have an 18 x 9" wheel with 4 1/2" back spacing. I'm almost against the upper control arm near the ball joint. Less back spacing clears by a bunch.