Offset difference - Team Camaro Tech
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post #1 of 6 (permalink) Old Mar 20th, 13, 05:24 PM Thread Starter
Justin
 
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Offset difference

I ordered 18x8.5" rims for my '69 and they fit great in the rear. These rims are 5.125" BS rims with +10.00mm offset. Look amazing, totally happy. Now when I go to the front, I see when turned all the way, it is pretty obvious I am going to be hitting the frame. These rims are also offered with 4.5" BS, giving a -6mm offset.

Will the 10mm offset on the rears look okay with a -6mm offset in the front or not? Anyone have a similar setup?
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post #2 of 6 (permalink) Old Mar 20th, 13, 07:10 PM
DjD
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Dennis
 
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Re: Offset difference

A +6 offset centers the wheel perfectly between the fender lip and inner areas of the fender well, both front and back on the '69. Your 8.5" wheel fits with a +10 offset but isn't centered as well as it could be and will stop you from running the widest of tires...

Your fronts probably need to be 8" wide at max with a +6 (4.75"bs) or the tires will be all over the inner fenders/frame rails.

...Dennis

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post #3 of 6 (permalink) Old Mar 21st, 13, 04:26 PM
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Re: Offset difference

These are 18x9.5 with 5.25 off set in the rear
18x8 with 4.5 off set in the front

The front dont rub but the rear will rub if I go over a decent size dip. Its has 2 inch lowering coils in front and 3.5" in the rear. I had to cut the lip of the fender well in the back.

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post #4 of 6 (permalink) Old Mar 22nd, 13, 06:20 AM Thread Starter
Justin
 
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Re: Offset difference

Thank you for your replies. I have a few options:

1. Send back the rims and go with a different set
2. Try the 18x8.5 with 4.5" BS and hope they clear the fender lip
3. Go with staggered rims, 18 out back and 17 in front
4. .625" spacers in front

I really love the rims. They check all the boxes I wanted (except for fitting...lol).
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post #5 of 6 (permalink) Old Mar 22nd, 13, 07:26 AM
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Re: Offset difference

#2 is out... 1/2" wider and 1/4" less back spacing than optimal/max wheel on a '69. Depending on tire size an 8" wide wheel with 4.75' bs will still slightly scuff the sub frame when lock to lock turning. As well requires at least one button head fender bolt and a little negative camber for best fit.

#3 will have the same issues as #2 unless you go with 8" wide w/4.75 bs.

#4 not gonna help, a spacer makes even less back spacing, will leave your existing 8.5" wheel with 3.875 bs...

...Dennis

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post #6 of 6 (permalink) Old Mar 22nd, 13, 08:37 AM Thread Starter
Justin
 
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Re: Offset difference

For #2, I should have included that the reason for the staggering was that they are offered as 17x8 with 4.5" bs. Sorry, it was floating in my head, but didn't make the post.
For #4, the spacer would be for the 5.125" rim giving a 4.5". Maybe go with a .375" spacer to get a 4.75" bs and keep the 5.125"?
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