If all the suspension components are in spec, check the front lower arm bushings. I had problem with keeping alignment spec in check and Mr. Popp saw that my front lower control arm bushings were worn out. Keep in mind that these were on a Z06 with about 9k miles.

 

The Z06 spec on camber is a rather wide range, with -.7 as the midpoint for both front and rear. I've never seen a recommended setup with more negative rear than front - it's always been more negative front than rear. That's because you would tend to get more corner roll on the front tires in high speed cornering, and the negative camber in the front offsets this a bit. With the Kumho MX tires, which may have a softer compound than a lot of street tires, we actually backed off some of the negative camber in the front, so if I remember correctly, I'm at -.75 since I was wearing a little too much off the inside front edges at -1.0. The backs are usually +.25 compared to the fronts. I use the car for the street and Big Willow. At a track with tighter corners (like Spring Mountain) I might opt to go back to -1.0 for the fronts. I know you're going to WS is a couple weeks, so you should check your front tire wear and possible understeer with the setup you have. If you see more inside wear than outer wear on the front tires at the end of the day, then you might consider a small adjustment to more negative in the front camber. I'm guessing the rears will be fine the way they are. Howard, it's all a matter of trial and error, since each person's setup is a little different - different sway/spring/shock combinations (since we all love to tinker), different tires, and different driving styles. Enjoy the process

 

Allen:

Thanks for the tips.

My alignment has always been more negative camber in the rear than the front. With canyons, SOW, and BigWillow...I have had even tire wear front and back with the Khumo Mx tires. I only recently got the excessive inner wear on the right front from driving with cockeyed front wheels.

I did have it in the canyons this wknd....seems good to me.

Just need to hitch up to somebody who will drag my butt thru turn 8 at 110+.............


DH

 

Just come on up when I'm there and I'll show you how to do it without fear - see, I've got these neat little pills . . . Anyway, if your caster arrangement works for you, that's fine. When you get to 120+, you might reconsider

 

You mean camber .... right?

I don't think I should use them, but I have neat little pills too.....


DH

 

Yup, camber is what it is - too many little pills . . .