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Wheel Backspacing
https://slantsix.org/forum/viewtopic.php?t=11196		 Page 1 of 1
Author:  Guest [ Tue Dec 14, 2004 6:33 pm ]
Post subject:  Wheel Backspacing
what backspacing is needed to fit a six inch wide wheel under the rear of a 73 dart? i know i need to measure it and i probably will but can someone enlighten me before i go to the trouble?
Author:  Dart270 [ Thu Dec 16, 2004 5:41 pm ]
Post subject: 
If you have a stock rear end, then you need about 4" backspacing to put the wheel pretty much in the center of the well. You can get away with between 3" and 4.5" backspacing on a 6" rim if that's what wheels are available and depending on your tire width. A 6" rim is pretty easy to fit into an A-body wheel well.

I have 8" wide rims on my '64 Dart and '66 Valiant. That's a little tougher, but still fine. Have 7" wide on my '68 Dart with 4" backspace.

Personally, I don't trust anyone's recommendations. I just measure everything at least twice using my existing wheels, and then get some wheels that will fit...

Lou
Author:  zedpapa [ Tue Jan 04, 2005 1:43 pm ]
Post subject:  measuring for backspacing
how do you measure for back spacing? i have 15x7 wheels from discount and have a problem with the right rear tire rubbing on the the inner fender on hard right turns i have looked at the spacing and i still have about a 1/2" to 1" of clearance between the tire and the leaf spring. if i have 3.5" of back spacing now, does that mean 4" of back spacing will move the tire in 1/2"?

zedpapa
Author:  Super6 [ Tue Jan 04, 2005 1:47 pm ]
Post subject:  Re: measuring for backspacing
Quote:
if i have 3.5" of back spacing now, does that mean 4" of back spacing will move the tire in 1/2"?

zedpapa
Yes.

Backspacing is the distance between the mating surface of the rim and the inside/backside bead mating surface.

-S/6
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