back spacing question....
back spacing question.... If i run a 15x12 wheel and the rear is narrowed 2.5" per side what back spacing will it need to be? Is it the same as with a 15x10 or would it be different?
Without a narrowed rear the 15x10 needs a 7.5" backspace. A 15x12 would need 9.5 backspacing (which they probably don't make)
So what you will need to do is find out the max offset you can get on the 15X12 and then subtract that from 9.5 and thats how much you need to narrow the rear on each side. Also order some minitunds and relocation brackets for everything.
So what you will need to do is find out the max offset you can get on the 15X12 and then subtract that from 9.5 and thats how much you need to narrow the rear on each side. Also order some minitunds and relocation brackets for everything.
cwaldt, a STOCK wheel has 7.5" back spacing for stock width rearend, so with it narrowed 2.5" per side that would move the backspacing back 2.5" per side also. thats on a 10" wheel though, not sure on a 12" wheel.
already have the rear suspension correct and its getting tub'd and everything, just wasn't sure on the offset on the new wheels.
already have the rear suspension correct and its getting tub'd and everything, just wasn't sure on the offset on the new wheels.
Originally Posted by skipperbisket
If i run a 15x12 wheel and the rear is narrowed 2.5" per side what back spacing will it need to be? Is it the same as with a 15x10 or would it be different?
Good luck, Ed
Last edited by Ed Wright; Feb 11, 2007 at 02:51 PM.
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The back spacing will depend on how close the tire is to the lower control arm. If your rear is narrowed and you have a 10" rim with a 5.5" bs. And the tire is real close to the control arm. Then your 12" rim has to have the same bs. If you have over an inch gap then your 12" rim can have a 6.5" bs.
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Originally Posted by skipperbisket
I'm running Wolfe LCAs with the offsets, moves the LCA 1.25" inboard. it is getting mini-tub'd also.
Good luck, Ed
