Widening the factory rally wheels - Team Camaro Tech
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post #1 of 9 (permalink) Old Jun 14th, 17, 10:40 AM Thread Starter
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Craig
 
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Widening the factory rally wheels

So I have the 15x7 rally's on my 68 camaro. I love the look of the rally wheels just wish the rears were wider. I was curious if anyone has ever sent the rear steel wheels in and had them widened. If so how wide can you go with them and not rub anywhere?

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post #2 of 9 (permalink) Old Jun 14th, 17, 10:48 AM
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Re: Widening the factory rally wheels

Why not buy a reproduction Rally wheel in the width you want they are sold in four and a half inch to ten inches widths (4-1/2", 6", 7", 8", 10") in 15 inch rim size with neutral back spacing (centered).

As to what fits I ran a 14 inch wide slick on my '68 but they wouldn't fit under a '69.

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post #3 of 9 (permalink) Old Jun 14th, 17, 10:48 AM
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Re: Widening the factory rally wheels

Why not buy a reproduction Rally wheel in the width you want they are sold in four and a half inch to ten inches widths (4-1/2", 6", 7", 8", 10") in 15 inch rim size with neutral back spacing (centered).

As to what fits I ran a 14 inch wide slick on my '68 but they wouldn't fit under a '69.

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post #4 of 9 (permalink) Old Jun 14th, 17, 11:05 AM
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Re: Widening the factory rally wheels

Yeah I agree - new reproductions are lighter and truer that any factory steel wheel is at this point.


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post #5 of 9 (permalink) Old Jun 14th, 17, 11:07 AM Thread Starter
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Re: Widening the factory rally wheels

Ok I'll look into finding those, Jegs might have em. Do you happen to know the stock wheel specs? Bolt pattern, back space, etc?

Heres what I found at Jegs just don't know if they would fit without modification.

http://www.jegs.com/i/Wheel-Vintique...03405/10002/-1

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post #6 of 9 (permalink) Old Jun 14th, 17, 12:03 PM
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Re: Widening the factory rally wheels

Stock Rally wheel was six by fourteen inches basically centered (three three quarter inch inch back spacing). All pre-eighty GM cars used a four and three quarter inch five lug bolt wheel circle. After GM went metric in the mid eighties they changed to a 130 mm bolt circle with M14 (half inch) studs, which is close but will not fit your Camaro.

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post #7 of 9 (permalink) Old Jun 14th, 17, 12:24 PM
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Re: Widening the factory rally wheels

A 15 X 8" wheel with 4.5" backspace is a good size to start with assuming you want the tire to tuck under the outer lip. I am running 245/60/15s in back in back with no rub. I know you could bump up to a 255 rear tire without rub. Others have fit larger tires without issues. You will not be able to get a 10" wheel to tuck under the lip without tubs.

This is the wheel I went with. https://www.summitracing.com/parts/WVI-30-5834042
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post #8 of 9 (permalink) Old Jun 14th, 17, 12:42 PM
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Re: Widening the factory rally wheels

What ever width you select, +6 offset is about as close as you can get to center the wheel between the fender and inner edge of the wheel well. Go to the sticky threads in this section to find info on backspacing conversion... I don't think I have seen anything wider than a 15x10" on the back of a stock axle 1st gen. Most guys with 17" tall or taller stop at 9.5" wide.

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post #9 of 9 (permalink) Old Jun 14th, 17, 03:35 PM Thread Starter
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Re: Widening the factory rally wheels

Perfect thanks for the help guys. I might look into doing a 15x9 rally.

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