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Old Aug 9, 2006 | 11:03 PM
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Default Offset trailing arm question

Recently I received my frame back from the powder coater’s. Along with the frame I had a variety of other parts shot too (control arms, trailing arms, diff X-member, etc). My car is definitely NOT a numbers matching car and I’m debating whether or not to install the original TA or to get offset TA to allow for wider tires.

For those of you out there who have already done so:
1. What are the advantages/disadvantages?
2. Does anybody have before and after pic of the rear of their car showing the difference in look with wider tires?

Thanks in Advance!

Here is some before, during and after pics of the frame





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Old Aug 9, 2006 | 11:17 PM
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what wheel\tire combo are you looking to use. If you go with 18" rims you can use about all that will clear the frame without the offset ta's
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Old Aug 9, 2006 | 11:49 PM
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Yes, I’m thinking about going with an 18” diameter rim, but I’m more concerned with tire width (9.5 to 10.5”). If I understand correctly the offset trailing arms allow up to 10” width opposed to stock 8”.
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Old Aug 10, 2006 | 12:00 AM
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I went with the offset T/As just so I could have the ability to go wide on the rims if I wanted. The price differential wasn't that much more and would give me some more options when I was ready.
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Old Aug 10, 2006 | 12:39 AM
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Originally Posted by Corvette69w427
Yes, I’m thinking about going with an 18” diameter rim, but I’m more concerned with tire width (9.5 to 10.5”). If I understand correctly the offset trailing arms allow up to 10” width opposed to stock 8”.
I have offset trailing arms, and went with 17 x 9.5 w/ a 5.5" backspace. The stock size spring is too close to the rim and tire, but with an 18" rim I think you'll be spared the need to have it shortend.

FYI VB&P cut my spring for free, even though it's installed on the car it has 0 miles. Greg from VB&P gets from me!
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Old Aug 10, 2006 | 01:21 AM
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There aren't *any* disadvantages with the offset TAs. They are built better and appear to be much stronger. You could run stock rims and tires if you wanted, or boost the width if that's your bag...
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Old Aug 10, 2006 | 08:46 AM
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Originally Posted by Z-man
There aren't *any* disadvantages with the offset TAs. They are built better and appear to be much stronger. You could run stock rims and tires if you wanted, or boost the width if that's your bag...
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Old Aug 10, 2006 | 09:06 AM
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I am running the stock trailing arm on mine. Running 18X10 with a 5.5 backspacing and a 275 40 18 tire. It is tight but no rubbing anywhere. I was going to buy the offsets but thought I'd try this first. It is working fine this way.
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Old Aug 10, 2006 | 12:57 PM
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Originally Posted by Van Steel
Me three. If you're gonna buy trailing arms, put some offsets in there. I'm gonna mount 18x10.5s with stock trailing arms, but I wish there were offset ta's in there. Not worth the expense for me now since my ta's are working. My biggest interference was my sway bar, which I modified.
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Old Aug 10, 2006 | 04:28 PM
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:Iagree:
Don't buy ofset arms unless you need new ones.
They really don't give you anymore clearance than the stock arms ( as long as you relocate the parking brake bracket to the top of the arm.)
Your tire will hit the frame before the trailing arm.

They are stronger however, than a rusted out 30 year old arm!
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Old Aug 10, 2006 | 06:50 PM
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Originally Posted by Bee Jay
Me three. If you're gonna buy trailing arms, put some offsets in there. I'm gonna mount 18x10.5s with stock trailing arms, but I wish there were offset ta's in there. Not worth the expense for me now since my ta's are working. My biggest interference was my sway bar, which I modified.
Originally Posted by 427V8
:Iagree:
Don't buy ofset arms unless you need new ones.
They really don't give you anymore clearance than the stock arms ( as long as you relocate the parking brake bracket to the top of the arm.)
Your tire will hit the frame before the trailing arm.
They are stronger however, than a rusted out 30 year old arm!
My stock trailing arms are in good condition. Although they have already been media blasted and powdercoated I am willing to grind off the parking break bracket to save $400. Do either of you have pictures of your modified sway bar or the parking brackets in their new location?
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Old Aug 10, 2006 | 11:23 PM
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i have run both arms with the 18x10 / 5.5 backspacing and 275-40-18 tires in the rear. with the stock ta's the wheel / tire sticks out a little past the fender lip whereas with the offsets the wheels sit slightly more inboard and is aligned with the fender lip.

stock ta:

offset ta:


a link to e-brake bracket relocation pics:

http://forums.corvetteforum.com/show...98977&posted=1
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Old Aug 10, 2006 | 11:35 PM
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Originally Posted by wnjlt1
i have run both arms with the 18x10 / 5.5 backspacing and 275-40-18 tires in the rear. with the stock ta's the wheel / tire sticks out a little past the fender lip whereas with the offsets the wheels sit slightly more inboard and is aligned with the fender lip.

stock ta:

offset ta:


a link to e-brake bracket relocation pics:

http://forums.corvetteforum.com/show...98977&posted=1
Hey, does this mean that the offset trailing arms also relocates the hub inward? This is news.
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Old Aug 10, 2006 | 11:35 PM
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I,ve heard the offsets are better for bearing wear as they center the wheel up better ? any truth to that ? ...I,m going to go with the stock arms and run a 18 x 9.5 wheel 5 " backspace 275/40/18 in the rear ...
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