Need help for backspacing - Team Camaro Tech
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post #1 of 10 (permalink) Old Nov 15th, 06, 02:50 PM Thread Starter
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Dan
 
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Need help for backspacing

Need some assistance to fit some new wheels. I'm looking to buy 18" BS Qualifiers for my 69 camaro. The rear suspension is stock with drum brakes. The front is stock with 2" lowering spindles and wilwood disc brakes. I'm looking to go 18x9.5 with a 275x40x18 in the rear and on the front want to do a 18x8 with a 245x40x18. I believe I need a backspace of and 5.75" in the rear and 4.5 - 4.75" up front .

Does anyone have this similar setup that can help me out?

Thanks in advance.
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post #2 of 10 (permalink) Old Nov 15th, 06, 03:19 PM
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Re: Need help for backspacing

I have the same backspacing with 17 inch wheels .275 rear and 245 front with no rubbing .
Mark .

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post #3 of 10 (permalink) Old Nov 15th, 06, 04:56 PM
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Re: Need help for backspacing

You'll want a 5.5" backspare on the rears and 4.75" backspace on the fronts.

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post #4 of 10 (permalink) Old Nov 15th, 06, 06:44 PM
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Re: Need help for backspacing

The rear should be fine and the front would be good if you didn't have dropped spindles - see below.

Jack

Last edited by JV69z/28rs; Nov 15th, 06 at 07:00 PM. Reason: double post
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post #5 of 10 (permalink) Old Nov 15th, 06, 06:53 PM
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Re: Need help for backspacing

If I read your post correct you have the dreaded "dropped spindles" in the front. If that's the case the 8" wide wheels may NOT work. The tie rod end may rub the tire or wheel. You need to visit our moderator David Pozzi's web site.http://www.pozziracing.com/first_gen...rop%20Spindles
Most people that have dropped spindles wind up using a 7" wide wheel in the front and backspace may be limited to 4 - 4.25". Do a search this has been discussed before. You want to make sure before you order wheels and find out they don't fit.

Jack
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post #6 of 10 (permalink) Old Nov 15th, 06, 07:18 PM Thread Starter
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Dan
 
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Re: Need help for backspacing

Quote:
Originally Posted by JV69z/28rs View Post
If I read your post correct you have the dreaded "dropped spindles" in the front. If that's the case the 8" wide wheels may NOT work. The tie rod end may rub the tire or wheel. You need to visit our moderator David Pozzi's web site.http://www.pozziracing.com/first_gen...rop%20Spindles
Most people that have dropped spindles wind up using a 7" wide wheel in the front and backspace may be limited to 4 - 4.25". Do a search this has been discussed before. You want to make sure before you order wheels and find out they don't fit.
Thanks for the info. I believe you are correct. I do remember when I put on the drop spindles and putting on my stock 15x7 ralley wheels, that the clearance from the tire to the tie rod end was only about 1/8" of an inch. And if I'm not mistaken isn't the back space on stock wheels 4.25 inches? If that's the case then I would definitely want to go with 18x7 with a 4" bs. Does this sound right to you.

Just out of curiosity, why do you say "dreaded drop spindles?"

BTW, thanks for Pozzi's website. That was very informative.
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post #7 of 10 (permalink) Old Nov 15th, 06, 08:14 PM
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Re: Need help for backspacing

This will answer why they are dreaded - http://www.pro-touring.com/forum/showthread.php?t=16609

Jack
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post #8 of 10 (permalink) Old Nov 16th, 06, 04:24 PM Thread Starter
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Dan
 
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Re: Need help for backspacing

I see your point. I wish I would have known this before putting them on my car. Oh well, live and learn.
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post #9 of 10 (permalink) Old Nov 16th, 06, 07:05 PM
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Re: Need help for backspacing

I know what you're thinking - this guy bashes the dropped spindles and over at pro-touring guys are using them to lower the front of their car. There is a difference! The ATS spindle corrects the front end geometry and only lowers the front 1". That is NOT the type spindle that is on David Pozzi's site an it does not limit backspace. Hope this helps.

Jack
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post #10 of 10 (permalink) Old Nov 17th, 06, 05:35 PM Thread Starter
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Dan
 
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Re: Need help for backspacing

Thanks for all of the posts guys. You all have been a big help.
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