2012 18" alloys on a '68 ??? - Team Camaro Tech
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post #1 of 10 (permalink) Old Apr 5th, 13, 09:21 AM Thread Starter
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2012 18" alloys on a '68 ???

Would these fit on a stock '68 coupe? If not, what mods would I need to make? They are factory take-offs from a 2012 Camaro. 18" alloys.
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post #2 of 10 (permalink) Old Apr 5th, 13, 10:18 AM
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Re: 2012 18" alloys on a '68 ???

Probably not, too much backspacing on the new ones.
Measure your wheel and check the new ones.
Better still if you could mount the new ones before buying.

Measure twice, buy once.

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post #3 of 10 (permalink) Old Apr 5th, 13, 10:21 AM Thread Starter
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Re: 2012 18" alloys on a '68 ???

Gotcha... so they'd hit the leaf springs in the rear, and control arms in the front? What about with the use of spacers? Would that make them hit the wheel openings?

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post #4 of 10 (permalink) Old Apr 5th, 13, 02:16 PM
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Re: 2012 18" alloys on a '68 ???

I'm not in favor of spacers as they increase the leverage on the wheel studs, add more stress.
Ideally, at the road surface looking to the rear in front each tire, you want the tire centerline to intersect amn imaginery line through the ball joints. This places the load equally on the contact patch and prevents scuffing of the tire in a turn.

Science project, you can take a paper towel roll and 'roll it' through a turn. You will see if the tire is turned in the middle, wear is equal on both sides of tire centerline. Move the rotating point either way about roll, and the longer 'side' slips across the surface inducing more tread wear. So its a trade-off. You like the wide stance, but the wear increases from turning the vehicle, so don't turn...

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post #5 of 10 (permalink) Old Apr 5th, 13, 03:47 PM Thread Starter
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Re: 2012 18" alloys on a '68 ???

Great analogy used.... I like it. Nixing the idea and sticking with something that fits. Thanks...

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post #6 of 10 (permalink) Old Apr 5th, 13, 04:22 PM
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Re: 2012 18" alloys on a '68 ???

I believe those are 18x7.5" with a 40 offset. A 6 offset centers the wheel and tire the best. You would need a 1 1/3" adapter. The difference in adapters and spacers is the adapter bolts to your hub and the wheel bolts to the adapter. Spacers should be less than about 1/4" and just fit between the wheel and hub.

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post #7 of 10 (permalink) Old Apr 5th, 13, 04:28 PM Thread Starter
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Re: 2012 18" alloys on a '68 ???

Quote:
Originally Posted by DjD View Post
I believe those are 18x7.5" with a 40 offset. A 6 offset centers the wheel and tire the best. You would need a 1 1/3" adapter. The difference in adapters and spacers is the adapter bolts to your hub and the wheel bolts to the adapter. Spacers should be less than about 1/4" and just fit between the wheel and hub.
Yes they are 7.5"...

Do you mean this type of adapter? (I know they are a tad thicker than what you mentioned) and does this stress the ball joints as well being that it's bolted not extended like a spacer?

http://www.ebay.com/itm/CHEVY-WHEEL-...af2125&vxp=mtr

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post #8 of 10 (permalink) Old Apr 6th, 13, 10:15 AM
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Re: 2012 18" alloys on a '68 ???

Use caution buying adapters. The stories I have read are poor quality manufacturing and the use of low grade hardware. I understand an adapter can be used with out issue but you just need to make sure you buy quality parts.

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post #9 of 10 (permalink) Old Apr 6th, 13, 11:28 AM
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Re: 2012 18" alloys on a '68 ???

Quote:
Originally Posted by Joe Harrison View Post
Use caution buying adapters. The stories I have read are poor quality manufacturing and the use of low grade hardware. I understand an adapter can be used with out issue but you just need to make sure you buy quality parts.
Agreed. The problem is that the high quality adapters are expensive, and usually if someone needs to run an adapter it's because they are trying to get a good deal on a set of wheels. And therefore don't want to, or can't spend a lot on the adapters.


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post #10 of 10 (permalink) Old Apr 6th, 13, 12:15 PM Thread Starter
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Re: 2012 18" alloys on a '68 ???

Quote:
Originally Posted by 67Rally View Post
Agreed. The problem is that the high quality adapters are expensive, and usually if someone needs to run an adapter it's because they are trying to get a good deal on a set of wheels. And therefore don't want to, or can't spend a lot on the adapters.
Quote:
Originally Posted by Joe Harrison View Post
Use caution buying adapters. The stories I have read are poor quality manufacturing and the use of low grade hardware. I understand an adapter can be used with out issue but you just need to make sure you buy quality parts.
I appreciate the tips and your replies. I will be cautious and think this over more... Thanks for looking out guys!

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