Wheel alignment info needed
Thread Starter
Pro
Joined: May 2005
Posts: 697
Likes: 50
From: Up North Wisconsin
Wheel alignment info needed
New tires are on the way and I'm thinking having an alignment done. The original Goodyear's have 25,000 on them and have worn very even other than slight wear and cupping on the inside fronts. The car is stock and street driven only. (mostly country roads) Can someone please provide the stock specs so I can talk intelligently with the alignment tech. Also, can anyone suggest any variations from stock specs which would provide better straight line tracking results for driving poor quality country roads. I'm thinking 0 toe or just a touch of toe in may help? Any thoughts are appreciated. I can't wait to get the Goodyear's off. 
Burning Brakes
Joined: Nov 2004
Posts: 993
Likes: 0
From: PA
A couple of things, first, get a FOUR wheel alignment, not just the front. The last couple of pages of the VBP catalog has specs in it, but I'm traveling and can't get the info. I have also seen a PDF that has it, but it's probably on my home PC.
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
Dont' have the stock C5 specs, but here are the Z06 specs for you which should get you in the ball park.
Specs:
Front Individual Toe: +0.04 degree +/- 0.10 degree
Front Sum Toe: +0.08 degree +/- 0.20 degree
Front Individual Caster: +6.9 degree +/- 0.50 degree
Front Cross Caster: within +/- 0.25 degree
Front Individual Camber: -0.70 degree +/-0.50 degree
Front Cross Camber: within +/-0.25 degree
Rear Individual Toe: -0.01 degree +/- 0.10 degree
Rear Sum Toe: -0.02 degree +/- 0.20 degree
Rear Individual Camber: -0.68 degree +/- 0.50 degree
Rear Cross Camber: within +/- 0.50 degree
Couple points. Recognize these aren't the C5 specs, which are likely less agressive in toe in and camber. Note the wide tolerance in these specs - for example, front camber can be -0.2 to -1.2 degrees (which overlaps some with the C5 specs that much I do remember). Be specific with your tech as to what you want. If you just ask for "stock", anything in that band is technically correct, but may not be what you really want. Saying I want front camber -0.5 is fine. They should be able to hit it within a tenth or two.
To reduce tramlining, I believe less camber and less toe will help. I'd say something around -0.3 camber and zero toe. However, your handling will drop slightly.
Specs:
Front Individual Toe: +0.04 degree +/- 0.10 degree
Front Sum Toe: +0.08 degree +/- 0.20 degree
Front Individual Caster: +6.9 degree +/- 0.50 degree
Front Cross Caster: within +/- 0.25 degree
Front Individual Camber: -0.70 degree +/-0.50 degree
Front Cross Camber: within +/-0.25 degree
Rear Individual Toe: -0.01 degree +/- 0.10 degree
Rear Sum Toe: -0.02 degree +/- 0.20 degree
Rear Individual Camber: -0.68 degree +/- 0.50 degree
Rear Cross Camber: within +/- 0.50 degree
Couple points. Recognize these aren't the C5 specs, which are likely less agressive in toe in and camber. Note the wide tolerance in these specs - for example, front camber can be -0.2 to -1.2 degrees (which overlaps some with the C5 specs that much I do remember). Be specific with your tech as to what you want. If you just ask for "stock", anything in that band is technically correct, but may not be what you really want. Saying I want front camber -0.5 is fine. They should be able to hit it within a tenth or two.
To reduce tramlining, I believe less camber and less toe will help. I'd say something around -0.3 camber and zero toe. However, your handling will drop slightly.
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