Weld Backspacing question

[NeQX]

What is needed backspacing for a 15x8 and for a 15x3.5

Wheel, 90 Draglite, 15"x3.5", 4x130mm Bolt Circle, 1.75" Backspace
Wheel, 90 Draglite, 15"x8", 4x4.25-4.5" Bolt Circle, 5.5" Backspace

Are those good?

 

[colemanitis]

3.5" wheels only come in one backspacing, so you don't have any options there. Most people use a 5.5", or a 4.5" BS on an 8" wheel. I have 5.5" BS, my tires tuck nicely inside the fenders. With a 4.5" the tires will stick out a bit beyond the fenders. See my Web site for pics. HTH.

 

[winder]

Did the quad shocks rub?? That backspacing it should.

 

[Muirracing]

TIRES??????

NEVER mentioned what size tires were used or are going to use??? LOL

 

[colemanitis]

Did the quad shocks rub?? That backspacing it should.

Yeah, they rubbed even after they were flipped, so the quads came off.