Question of backspacing - Team Camaro Tech
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post #1 of 4 (permalink) Old May 13th, 10, 07:38 PM Thread Starter
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Question of backspacing

Hello all,

I am about to purchase some 15X7 rally wheels for my 68 camaro, and I am just wondering if backspacing is something that is done when you order tires, or is it already on the rim? Maybe a stupid question, but I dont want to order rims only to find out they have the wrong backspacing. I just dont seem to grasp if its done while getting tires or not.
Also...what size tires will I need to get in order not to rub, and what backspace will I need for the tires to come out to just before the wheel well? I hope this all makes sense.
Thanks for the help!
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post #2 of 4 (permalink) Old May 13th, 10, 08:15 PM
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Steiner
 
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Re: Question of backspacing

The backspacing will be one of the dimensions of the rim. It is how far the back face of the wheel hub is from the back edge of the rim.

4.25" works pretty good on a 15x7 along with 225/60 tires if you want the same size all the way around. 4" would push the tire edge close to the fender lip (on a 7" rim) if that is what you're going for. 235/60 works good all the way around on a '69 but the fronts rub the frame a tad at full steering wheel lock.


These are some old pics of 15x7 rims with 4.25" backspacing and 235/60 tires all the way around with four wheel drums.




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post #3 of 4 (permalink) Old May 13th, 10, 08:39 PM Thread Starter
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Re: Question of backspacing

Quote:
Originally Posted by Steiner View Post
The backspacing will be one of the dimensions of the rim. It is how far the back face of the wheel hub is from the back edge of the rim.

4.25" works pretty good on a 15x7 along with 225/60 tires if you want the same size all the way around. 4" would push the tire edge close to the fender lip (on a 7" rim) if that is what you're going for. 235/60 works good all the way around on a '69 but the fronts rub the frame a tad at full steering wheel lock.


These are some old pics of 15x7 rims with 4.25" backspacing and 235/60 tires all the way around with four wheel drums.




Perfect!! Thanks so much for the clarification!
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post #4 of 4 (permalink) Old May 13th, 10, 08:48 PM
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Jerry R.
 
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Re: Question of backspacing

A 255 will fit the rear with no rub

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