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A few questions about alignment

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Old 07-11-2011, 09:13 PM
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Default A few questions about alignment

I've come to the conclusion that it would be worthwhile for me to get an alignment for my stock MY2001 AP1. My research on alignments has brought up a few questions. I'm trying to find a balance between performance on the auto-x course and tire wear (I DD my S). Given the intended application and my (limited) understanding of alignment, I've come up with these settings:

Front
Camber: ≈ -1.5°
Toe: 0”

Rear
Camber: ≈ -2.0°
Toe: .20” IN total (.10 each side)

I'd go with the UK alignment specs, but it seems like the high amount of toe would destroy tires.

Would these be reasonable settings for a daily-driven, occasionally autocrossed car (ie will they lead to any benefit over stock specifications)? If so, should an every-day shop (as opposed to a performance-oriented one) be able to set my alignment to these specs?
Old 07-12-2011, 03:50 AM
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Originally Posted by blasphemy101
Front
Camber: ≈ -1.5°
Toe: 0”

Rear
Camber: ≈ -2.0°
Toe: .20” IN total (.10 each side)

I'd go with the UK alignment specs, but it seems like the high amount of toe would destroy tires.

Would these be reasonable settings for a daily-driven, occasionally autocrossed car (ie will they lead to any benefit over stock specifications)? If so, should an every-day shop (as opposed to a performance-oriented one) be able to set my alignment to these specs?
I'd recommend going with even less rear toe than .2" (.46deg) total. In my experience playing with rear toe (from 0.15deg to 1.05deg total), any more than ~.3deg total and you greatly increase tire wear and begin to create screwy handling characteristics (straight-line instability/twitchiness, understeery when you want it to turn).

Your camber specs look good, but I'd go with .2-.3deg total rear toe (.1 - .15deg per side)
That would be .09" - .13" total (.045" - .065" per side).
Better tire life, better handling, less twitchy/nonlinear handling, better mileage, etc. Win/win/win/win.

The UK spec (.67deg) is RIDICULOUSLY excessive. Good for nothing, bad for everything.
Old 07-12-2011, 07:50 AM
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Wow -- I think I meant to write .2 DEGREES total! D'oh! I'm still not too familiar with the terms.

Thanks for the terms clarification and recommendations
Old 07-12-2011, 09:05 AM
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Originally Posted by blasphemy101
should an every-day shop (as opposed to a performance-oriented one) be able to set my alignment to these specs?

It's been my experience that unless you know the technician who does the alignments, most chain tire shops will only align a car within the "acceptable range" according to thier computer program.
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