When I purchased my 2003 Z06 new it would follow any and all grooves in the road. (GM calls this Trameling) It was bordering on usafe to drive because the car would literally change lanes in an instant at higher speeds on uneven highways and streets. The faster you drove the worse it was, or it was really bad under hard acceleration.

I had also read all the posts about really quick tire wear on the Z06's, so I had them realign the car to standard C5 specs which helped considerably, and I still have my original tires at 24,000 miles, but the car still continues to be a handful on uneven roads. I have never had this problem with my previous C4 Corvettes, BMW's, etc.

I think the car needs a lot more caster, but I'm not sure what a good spec would be. I saw that the new C6 has something like 8 degrees more caster to solve this common issue on C5's. They even touted this as a new enhancement to the front suspension in some of their original marketing materials to improve tracking.

Does anyone have any recomendations on alignment specs for a street driven Z06 that will decrease this problem to an acceptable level?

 

 

What you describe is more a function of toe in (IMHO). Increase your toe in by 1/16 inch (to a max of 1/8 total toe) should solve your problems.

Check out this link : http://www.vbandp.com/instructions/h...ruct/align.htm

Also, what tires are you running? Stock GY Z06 tires? A softer compound, stickier compound will also help trameling.

My 2 cents worth.

EG