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Discussion Starter #1
Need some advice. Still deciding between the Toyo's and new Firestone Wide Ovals. Since my Z is a daily driver should I stick with the Z06 alignment specs or use the regular C5 alignment specs. Original front tires are about gone with 25K miles--no complaints there. Rears are still in good shape. Ideas and thoughts please. Thanks in advance. Z06vette rules!! :zboobie:
 

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IMO use the Z06 alignment numbers. 25,000 miles out of front tire is excellent.

This is the factory specifications for the ZO6, 01 and up. These are different than regular C5 specifications, so some shops alignment machines may not have the right databases loaded to show this:

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
For more aggressive track/street use, increase front individual camber to 1.0 degrees, and rear individual camber to .8 degrees, while reducing front toe to .06 degrees, and rear toe to the minimum (.01 degrees). This is a very drivable setup and increases mechanical grip noticeably. Some auto-crossers will get even more aggressive, setting rear camber at 1.1 degrees and front at 1.5 degrees, and toe-out the front at .02 degrees, but this will cause a lot of tire wear on the street, and make the car a little "Dotty" on regular surface streets, but makes them really grab on tight courses on marginal surfaces

This is what I got from previous posts, I think this is from the service manual:

LEFT & RIGHT FRONT:

Camber: Specified Range: -1.2 to -0.2 Optimal: -0.7
Caster: Specified Range: 6.4 to 7.4 Optimal 6.9
Toe: Specified Range: 0.15 to 0.25 Optimal 0.20

FRONT
Cross Camber: Specified Range: -0.5 to 0.5 Optimal: 0.0
Cross Caster: Specified Range: -0.5 to 0.5 Optimal: 0.0
Total Toe: Specified Range: 0.30 to 0.50 Optimal: 0.40

LEFT & RIGHT REAR
Camber: Specified Range: -1.2 to -0.2 Optimal: -0.7
Toe: Specified Range: -0.06 to 0.05 Optimal: -0.005

REAR
Total Toe: Specified Range: -0.11 to 0.09 Optimal: -0.01
Thrust Angle: Specified Range: -0.10 to 0.10 Optimal: 0.00

Alignment measurements are in degrees


Front Alignment Specs Service Allowable Service Preferred
Front Individual Toe +0.14 to -0.06 degrees +0.04 degrees
Front Sum Toe +0.28 to -0.12 degrees +0.08 degrees
Front Individual Camber +0.50 to -0.70 degrees -0.20 degrees
Front Cross Camber +/- 0.25 degrees within 0.50 degrees
Front Individual Caster +6.4 to +7.4 degrees 6.9 degrees
Front Cross Caster +/- 0.25 degrees within 0.50 degrees
Steering Wheel Angle +1.0 to -1.0 degrees 0.00 degrees

Rear Alignment Specs Service Allowable Service Preferred
Rear Individual Toe +0.09 to -0.11 degrees -0.01 degrees
Rear Sum Toe +0.18 to -0.22 degrees -0.02 degrees
Rear Thrust Angle +0.10 to - 0.10 degrees 0.00 degrees
Rear Individual Camber +0.32 to -0.68 degrees -0.18 degrees
Rear Cross Camber -- within 0.50 degrees

-or-

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
 

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Discussion Starter #3
Thanks for the info. I have copied the page of alignment specs from my Shop Manual and will stick with the Z06 specs. :usa:
 
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