On Fri. I am getting the first front/rear alingment on my 03Z06, I just bought a set of Kumho XS 275/40/17 front, 315/30/18 rear. the car gets less then 6k miles a year and is mainly used for auto-x. so what should I get for an alingment as far as camber/caster toe in/toe out etc. etc.

 

CAMBER: -2.5° front, -1.5° rear; CASTER: max; TOE: -1/8" toe-out, front; 1/8" toe-in, rear

source http://forums.corvetteforum.com/c5-g...ngths-etc.html

 

-2.5 on a street car?

 

-2.5 camber will wear the inside off a tire used mostly for straight street driving.

RonJ ...

 

You did say this..not street.

 

Quick comment. The ZO6 does have more aggressive alignment that the base car. If it is adhered to, and not allowed to be exaggerated, it will not wear the tires unacceptably, though the wear pattern will be somewhat different that the base car. I have done it all three ways, including the exaggerated way (ate up my tires), and am very happy with the factory ZO6 setting. The alignment shop should have the ZO6 settings. Verify with them (as I did), that they have them, and that they differ from the base car.

I am sorry, but I do not have them handy. Maybe someone else will jump in as well. But you should verify the settings with more than one source, and I think you will be very happy with the the factory ZO6 settings. I use Pilot sport II's, so I take it seriously, and I am very pleased.

Hope this helps, regards

 

I would say yes, I'm doing about the same mileage in a year with -2.0 camber and running about 6 to 8 auto-x's a year. And I'm wearing the outside of the tire not inside like I thought I would. I think I need more to makeup for the stock Aarm bushing not holding the camber - in the hard cornering of autoxing. Oh and I'm running Kumho MX's

 

I believe this is the correct alignment for the ZO6. One can do whatever they want, but if you are concerned, this is correct. The source is LS1.com, which has each model, listed by type and year, going all the way back thru the C4. These numbers are more like what I remember. For street us as well as some track use, the factory ZO6, though different from base, is not that severe.

You you should get a dealer or someone to at least verify the GM spec before jumping around with everyone's custom specs, some of which, I am sure, work well for them, but perhaps at a cost.

Hope this helps:
Z06
front
camber -1.00* +/- 0.60*
caster 8.00* +/- 0.60*
total toe 0.10* +/- 0.20*

rear
camber -1.00* +/- 0.50*


This is from Digital Corvette (with comment):
FE4 (Z06)
Rear Individual Camber
- 0.68
+/- 0.5

Rear Cross Camber
Within +/- 0.5

Greater negative camber helps increase the tire contact patch in aggressive cornering situations.
total toe 0.00* +/- 0.20*

 

the following alingment was done on a friends car by Danny Popp as a street/auto-x alingment and what I'll want on my car

FRONT
-1.7 camber
6.7 caster
-.04 toe

REAR
-1.0 camber
.08 toe

thanks everyone