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Same size wheels ?? C5

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Old Dec 20, 2012 | 06:18 PM
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Zora's Brother Joe's Avatar
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Default Same size wheels ?? C5

Does anyone run the same size wheel all the way around , with the same rim size and the same tire size? , is there any pro's or cons ? just curious ?? would it be a benifit for rotation handleing ? thanks all your imput Joe
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Old Dec 20, 2012 | 06:50 PM
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Originally Posted by Zora's Brother Joe
Does anyone run the same size wheel all the way around , with the same rim size and the same tire size? , is there any pro's or cons ? just curious ?? would it be a benifit for rotation handleing ? thanks all your imput Joe
No can do Joe.........the active handling uses a system to detect when it's needed and in that system it was set up with the front and rear to have a variance front to rear diameter.

You can put the same size diameter wheels on, like 18's or 19's on all four corners but you will need to have your rear tires be taller in the rear, than the front.

This is what I have read:

I think the rears need to be at least a 1/2" taller than the fronts to prevent any trac/active handling codes

I took this quote from another thread here on the forum.
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Old Dec 20, 2012 | 10:22 PM
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, I've always heard the 1/2" taller in the rear guideline too.
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Old Dec 20, 2012 | 10:40 PM
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I think it is quite common on track cars. I've run a square setup on my 99 track only car with the traction control off with no issues.
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Old Dec 22, 2012 | 12:38 AM
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Originally Posted by crimlwC6
I think it is quite common on track cars. I've run a square setup on my 99 track only car with the traction control off with no issues.
I think I've heard that a lot of track guys run 18X10.5 or 18X10 wheels with 285 tires on them on all 4 corners.

It will render traction control useless, and I think it might barely rub the front tires at full tilt on a loaded suspension, but not enough to cause any real issues.
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Old Dec 22, 2012 | 03:20 AM
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I've run 18 X 10.5s with 60mm offset all the way around. I used Pirelli Trofeos in 295/30/18 on all four wheels. The car handled great and rotation was greatly improved as well as turn in. Traction control is out the window, you don't even leave your pit spot without turning it off
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