Back Spacing

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Mar 31, 2010 | 12:38 PM

Commando

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Mopar Lover

Joined: Nov 2007

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From: New Jersey

Back Spacing

I haven't addressed this yet with my projects but think this should benefit a lot of people to figure out how to calculate back spacing when getting new wheels. I have seen a few tools out there for this purpose, but would like to hear what you all recommend when doing this.

Mar 31, 2010 | 08:21 PM

67 GTX

Mopar Lover

Joined: Jul 2008

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From: Brooklyn, N.Y.

i know this is for trucks, but it will help
http://www.minitruckinweb.com/tech/w...ons/index.html

i had to go through this about two weeks ago

Apr 1, 2010 | 04:30 PM

OHD

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Measure your current tire clearance then measure your current wheel. Add width or height if you have room, go crazy if you have a plasma cutter or torch.

Lay wheel on its face

place a straight edge on the up side of the wheel

measure from (the wheel touching part of the straight edge) to center of wheel

measure the thickness of the rim lip

deduct the rim lip thickness from the number from the SE to Center and you have the backspacing.

some companies do not deduct the rim thickness, always ask before ordering.

Last edited by OHD; Apr 7, 2010 at 04:21 PM.

Apr 1, 2010 | 06:40 PM

Commando

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Mopar Lover

Joined: Nov 2007

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From: New Jersey

Thanks 67GTX That second part looks helpful, as what is on there now has no relevance to the new wheels, just want to make sure that the ones I picked out have the right spacing so they don't stick out too much or rub.

Apr 1, 2010 | 07:20 PM

Commando

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Mopar Lover

Joined: Nov 2007

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From: New Jersey

This is the tool I was referring to, used on the car and checks the clearances.

http://www.summitracing.com/parts/PHP-01201

Apr 7, 2010 | 04:24 PM

OHD

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For 75 bucks (cost of that "tool") someone will come over and measure your wheel and tell you EXACTLY what you can and cannot do... it is a real simple proceedure and takes 3-4 mins

without the tool...

Apr 8, 2010 | 03:06 PM

Commando

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Mopar Lover

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From: New Jersey

The thing is that American Racing told me the wheels would be custom made upon my order, so I wanted to make sure I get the right ones,

Apr 9, 2010 | 11:55 AM

OHD

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"the wheels would be custom made upon my order"

I think you misunderstood the sales person, they need the measurement to give you the correct, mass produced wheel...out of stock...