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Old 18-12-2016, 07:29 PM   #1
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Help with working out wheel sizes/off set etc.

Hi all,
I feel the std 17" alloy don't fill the arches as much as they could so I'm thinking of changing the alloys but a bit lost on offsets etc. I was hoping on getting details from the other thread I started but only 2 people posted.

I understand the std wheels are 17" 7.5J with 28 ET.

Std 350z are 18" 8J with 30 ET
350z Rays are 18" Fronts 8J with 30 ET and rears 8.5J 33 ET.

So which will fill the arches more?

And if I go for after market one what ET should I get and whats the offset range on a gt?
What if i fit spacers?

Thanks.

Last edited by 57jam; 18-12-2016 at 08:31 PM.
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Old 18-12-2016, 10:13 PM   #2
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The offsets on the 350GT are negative, so the smaller the figure the further out in the arches they will sit, sorry cant remember what those wheels of mine where, but they had low offsets, and spacers.
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Old 18-12-2016, 11:16 PM   #3
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Originally Posted by Tricky-Ricky View Post
The offsets on the 350GT are negative, so the smaller the figure the further out in the arches they will sit, sorry cant remember what those wheels of mine where, but they had low offsets, and spacers.
Hi, so the ET for the std wheels which I qouted in my 1st post are wrong then?
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Old 18-12-2016, 11:48 PM   #4
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Think mine was et 20 on my old 350gt
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Old 19-12-2016, 12:00 AM   #5
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Originally Posted by 57jam View Post
Hi, so the ET for the std wheels which I qouted in my 1st post are wrong then?

No! just pointing out that if you want to get the wheels to fill out the arches, you need a lower - offset, IE if the std are -28 you will need a lower figure, or add spacers in order to get them closer to the arch.

Some info here, http://www.tirerack.com/wheels/tech/...jsp?techid=101
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Old 19-12-2016, 08:22 AM   #6
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Ok thanks,
Does anyone know what the max and min offsets are on a gt?
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Old 20-12-2016, 09:11 PM   #7
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Also depends how you want the car to look/sit/handle too, you won't fill the arches with any of those stock wheels (without a large spacer) and without a drop


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