Backspacing question

[86 T type]

I am thinking about ordering some wheels soon and have a question about backspace. I have searched and found that some guys are running a 15x8 with a 4 inch backspace with Eibach springs. The wheels I am looking at come with a 4.5 inch backspace. Will I have rubbing issues with these wheels and Eibach springs? I am looking to run a 275/50 tire as well. I will roll the fender lips if I have to.
Will I be OK with the 4.5 backspace?
The wheels I am looking at are the Summit Drag Thrust

Any thoughts or comments are welcomed.
Thanks
Chris

 

[Slow91z]

With 4.5" BS you will be farther in, so rolling the fender won't be needed but you might need a spacer to get it out of the frame.

3.5" you will be out some and will probably need to roll it. 4" is pretty much center.

 

[SCOOBY DOO]

4" is optimum for these cars.

 

[86 T type]

Thanks for the replies. I am going to get ahold of Summit and see if the 15x8 is available with a 4 inch backspace. It is only showing a 4 inch backspace on a 15x7.

Thanks again.
Chris

 

[charlief1]

What wheels are they Chris?

 

[86 T type]

I'm looking at the Drag Thrust from Summit.

Chris

 

[bad V6]

Centerline wheels can be ordered with a 4" back spacing.

 

[threerail]

i run 15x8 americans w/4in bs with 275/60/15 mt drags and fit PERFECT, 15X7 front w/235/60/15 4in bs, clears good too, good luck

 

[shifty6]

Ran 275-50-15's for years on Weld 15x8 pro-stars w/3.5"(no spacers) bs and never rubbed anywhere. Only need the 4" bs when u step up to 28" tires (275-60-15). HTH.