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Discussion Starter #1
I remember several years ago reading a lengthily thread about the GTR's ECUs and the effects of installing bigger wheels and how at that point, it would damage the car or have a serious effect on it.

Can anybody guide me to a conversation if this sounds familiar or advise me please? I have searched a few weeks ago several times and typically, it was repeatedly fruitless.

Many Thanks

CJ
 

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Mismatched tyre sets cause speed sensors to read wrong, causing 4WD (ATTESA 'ECU') to engage way to much, which can kill the transfer case and creates strange driving behaviours.
 

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Discussion Starter #4
I intend to fit 18" wheels and wanted to find out what the consequences might be. The cars' ecu expects 17" and I'm keen to do things properly.
 

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Fit the same tyre & wheel size on all 4 corners and it will cause no issue.
Staggered fitment that changes the rolling radius between front and back is the main cause of issues.
 

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Mismatched tyre sets cause speed sensors to read wrong, causing 4WD (ATTESA 'ECU') to engage way to much, which can kill the transfer case and creates strange driving behaviours.
I was wondering about my wheels
Front 245/35Z R19
Back 275/30Z R19

Would these differences cause the ATTESA to have a problem?
 

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I think you can run a 5% circumference difference before the ATTESA throws a wobbler and disengages.
 

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5% they are sensitive .

I would not think this would make the car a little dangerous to drive, just makes them normal and up to the driver to adjust to the conditions ?
 

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5% they are sensitive .

I would not think this would make the car a little dangerous to drive, just makes them normal and up to the driver to adjust to the conditions ?
 
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