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Yellow Mark at 12:00


White987S

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Hi White987S.... Well my GT3 doesn't have that mark....but it's an '04 GT3. I've seen the mark you talk about, though, on race-oriented cars, including GT3 Cups and RSRs. It's meant to be a driver aid. It makes it easier to see visually where the front wheels are pointed.....as in the case when the car isn't exactly going where the front wheels are pointed. Especially usefull if the driver has been shuffle steering (moving his hands away from the 9 and 3 o'clock positions on the wheel.

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...to keep the front pointing "front." (i.e., to continue tracking in a straight line: "keep on top")

I have recently heard that the "Donohue" stripe is there to enable fast changes in the pits when the QR-hubbed car comes in for driver changes, etc.

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Most all recent quick release hubs for steering wheels are keyed such that they only fit on one way. For instance, the '04 996 Cup cars have a coupling shaped like a non symmetric oval that will fit on only one way. The wheel stripe is always at 1200 if the alignment has been done correctly.

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Most all recent quick release hubs for steering wheels are keyed such that they only fit on one way. For instance, the '04 996 Cup cars have a coupling shaped like a non symmetric oval that will fit on only one way. The wheel stripe is always at 1200 if the alignment has been done correctly.

Perhaps the observation was historical. Mine is old school & definitely not Porsche:

post-21569-1191167252.jpg

Edited by lbp
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