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Geometry settings, drifting left still


ironhide

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Hi guys, bit of a niggly one this.

 

After an alignment last year, after it was lowered and camber arms added the steering wheel has always been a couple of degrees to the right on straight roads and the car slightly drifts to the left regardless of speed or camber of the road.

 

Had another alignment the other day and whilst the steering is better and car feels better it still drifts left, these are the results.

 

Before:

IMG_0786_zps9e9ef76a.jpg

 

After:

IMG_0787_zps739a0072.jpg

 

The only thing I can think of is the front left caster is out meaning it's very slightly shorter wheelbase on the left causing the car to drift left, this could've been from a pothole I hit back in the winter on that side. That said, reading the technical info it suggests the nominal caster is 8.10 so not that far out.

 

Any ideas? Could it be a bushing or replacement component required?

 

Also I get a fair bit of road noise at speed from the front, I suspect it's just my Khumo tyres...kind of like a humming noise over 80mph.

 

Cheers.

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Caster will not cause any pulling to left or right. The front camber's are out of spec, but the difference between them is within 0.15' and it will always pulling to the less negative side anyway (in your case to the right). I would say from the alignment: you are having problem with your tyres (try to swap them with another car if possible) or your suspension need to be checked carefully for any worn bushes (like banana arm one) to make sure they not alter the settings while you are driving. It would be also good to know what is the SAI (STEERING AXIS INCLINATION) on your car as that would indicate any distorted suspension parts like hub or shocks etc...

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This was my before and after from earlier on in the year. Mine was pulling left also after a compression bush change and in the end it was the rear left that was pulling also.

 

7816BB75-AA2C-4D29-A384-CBFC99C455AC-21911-0000110C89BBA82B_zpsf720c57f.jpg

 

But TBH yours look quite similar to mine now

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Caster will not cause any pulling to left or right. The front camber's are out of spec, but the difference between them is within 0.15' and it will always pulling to the less negative side anyway (in your case to the right). I would say from the alignment: you are having problem with your tyres (try to swap them with another car if possible) or your suspension need to be checked carefully for any worn bushes (like banana arm one) to make sure they not alter the settings while you are driving. It would be also good to know what is the SAI (STEERING AXIS INCLINATION) on your car as that would indicate any distorted suspension parts like hub or shocks etc...

 

Thanks for that, very helpful. Could be tyres, they were part worn Kuhmo's so could've worn slightly different on the previous car (Which was a zed) plus they are noisy and planning to change them anyway.

 

For the rest I think i'll need to take it to a more specialist garage.

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This was my before and after from earlier on in the year. Mine was pulling left also after a compression bush change and in the end it was the rear left that was pulling also.

 

But TBH yours look quite similar to mine now

 

Cheers, what did you do to fix the rear left?

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