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Gtr Tram Tracking

FineLine
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FineLine Grand Master

FineLine

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The 33 gtr is now rego'd and driving. Its a sweet ride but the tram tracking is very annoying.

I had the 285x30 18's on the gtst and the tracking was noticeable but not annoyingly so.

I fitted these same wheeels/tyres to the gtr and the tram tracking is bloody horrible. It will climb up and follow any small deviation in the road surface. I physically have to fight to keep it in a straight line. On a smooth ride its perfectly fine, I can let the wheel go and the car tracks true.

Is this inherent in the awd with fat tyres or is it possible my wheel alignment needs attention?

Any help appreciated.

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MrStabby Grand Master

MrStabby

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Isn't that usually a toe issue? More toe and it will change direction very readily, so nice for cornering, but have more of a tendency to tramline. I'm running zero toe at the front but I'm only running 255s, and its a good compromise for me. Do you know what your toe setting is now?

GTSBoy Grand Master

GTSBoy

Posted
Posted

It could be just toe as Mr Stabby says, or it could be that some of the bushes in the front end of the GTR are a bit stuffed and allowing a bit of vagueness. When they're like that, the tyres will grab hold of a groove or feature in the road and that will twist the suspension until the bushes run out of give. If there's enough give to allow the wheel to turn far enough to start steering, then the car will follow. With bushes with less slop, the wheel doesn't get to turn far enough to follow the road feature, and you just feel a tug in the steering wheel rather than the whole car following.

FineLine Grand Master

FineLine

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It could be just toe as Mr Stabby says, or it could be that some of the bushes in the front end of the GTR are a bit stuffed and allowing a bit of vagueness. When they're like that, the tyres will grab hold of a groove or feature in the road and that will twist the suspension until the bushes run out of give. If there's enough give to allow the wheel to turn far enough to start steering, then the car will follow. With bushes with less slop, the wheel doesn't get to turn far enough to follow the road feature, and you just feel a tug in the steering wheel rather than the whole car following.

The bushing in general seems to be in good shape.

I am a bit suss of the wheel alignment so I'll start there. Even thought its tracking true on a flat road there may well be toe settings that need attention.

Thanks for your input blokes.

NISSAN GTR Veteran

NISSAN GTR

Posted
Posted

Isn't that usually a toe issue? More toe and it will change direction very readily, so nice for cornering, but have more of a tendency to tramline. I'm running zero toe at the front but I'm only running 255s, and its a good compromise for me. Do you know what your toe setting is now?

I had heaps of toe out in the front on my R34 , cornering was perfect with no tracking at all

the problem is if your GTST had more camber than your GTR then the tyres will have more inside wear and tending to have more load placed on the outside of the tyre ,

which will track heavily on undulating surfaces.

One way to find out is to reverse the front tyres , see what happens , if it continues its your bushings , my guess it will stop tracking !

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