im looking to buy some draglites for my 91 rs i want to go 15 by 10 on the back and was wondering what kind of backspacing i need. im not worried if i have to "make" a little extra space. thanks in advance.

 

anybody? out there have any idea. i know there are third gen guys that have done this and know. any help will be greatly appreciated.

 

Yea, there are alot of 3rd gen people around, they'll chime in for ya soon.

I was in the same boat as you and alot of different people told me different answers so I had to measure my own setup to make sure I got the right wheels!
Since I was unsure about the "new" backspacing on my Chevelle this is what I did ....With the vehicle sitting level and wheels on the car; I measured the space between the inner most part of the wheel or tire to the outer most part of the car. Example...for my car, the outer most part was the lower shock mount and the inner most part of the wheel/tire was the outer rim of the wheel. There was 2 inches there. So then I had to measure my current wheel's backspacing so I took the wheel off and layed it face down. Took a straight edge and layed it across the wheel but not on the tire. Then I took a ruler and measured the distance from the bottom of the straight edge to the mounting surface on the wheel (where the wheel sits flush against the drum/rotor.). This is the wheel's backspacing and it was 4 inches. So with the other 2 inches of room to bring the wheel in; I figured that I could use a wheel with as much as 5.5 inches of backspacing. But just to make sure I didn't bring it in tooo far, I bought wheels with 5 inches of backspacing.

I hope this helps and didn't confuse you.

 

thanks for the reply heavychevyss. i was hoping that i could get a solid answer instead of getting under it and measuring myself (sounds lazy i know) but thanks nonetheless.