Corner balance/ ride height par duex

[rdane]

Here are the numbers currently on my problem child.....

c/b with 200# ballist on the driver's side:

LF 606 RF 547
LR 897 RR 814

Ride height:

LF 24 1/16 RF 24 15/16

LR 25 RR 25 1/4

camber
lf -1.01 rf -1.26 lr -1.23 rr -1.28
caster
lf 4.82 rf 4.72
toe
lf .04 rf .04 lr .02 rr .01

Assuming the frame and struts are straight is this acceptable?
I saw the post about B Anderson saying you need to be within 40 #s on the c/b. How true is that? How about the ride height? Local shops are telling me with in a .25" all the way around!
What I intially wanted was the car lowered to Euro ride height, and a c/b, alignment for some track days and auto cross.

What would be a set up that is acceptable? Can any one tell me what the ideal C/B, ride height numbers and alignment should be on this car for my intended purpose. I am running 7x16 and 9 x16 inch Fuchs with 205 and 245 SO3s if that matters.

[ChrisBennet]

They ought to be able to get the camber in the front more even than that. I run -1 degree negative camber in the front and -1.5 in the rear. This isn't ideal for track tires but it is a good compromise for a car that is used on the street as well as the track.
-Chris

[don911]

I agree with Chris that the front camber should be closer. I just had my car done a couple of weeks ago. It's set up for street/track. Car is 87 coupe.

height: Front 24 3/4 L&R, Rear 24 7/8 L&R
Weight: LF 615, RF 585, LR 923, RR 863
Camber: LF -0.9, RF -1.1, LR -1.7, RR -1.7
Caster: LF 6 deg., RF 6.1 deg
Toe: LF -0.01, RF 0.00, LR 0.16, RR 0.16
Front Cross Camber: 0.1 deg.
Front Cross Caster: -0.1 deg
Front Total Toe: -0.01 deg.
Front Set Back: 0.29
Rear Total Toe: 0.32
Rear Thrust Ange: 0.00

[Eric Coffey]

I also agree, and would add that your rear ride height is a just a tad high in relation to the front. Even with a fender measurement of .5" higher up front, you should still end up with 1 degree forward rake. That said, a little (more) forward rake/weight is fine IMO. So to make life easy, I try to get the same fender height all the way around (24.5" x 4 for example). Also, you should be able to increase the caster, rear toe, and rear neg. camber a fair amount without causing any abnormal tire wear issues.
Just for comparison, I've included the specs on my previous 911 below. It was set up for "aggressive street/light track", was mainly street-driven, and I had no uneven tire wear issues. Not to mention the car handled great!


Car: 1988 911 Targa, 16x6F & 16x7R (w/28mm spacers)

Ride Height: 24.75 (LF/RF/LR/RR)

Corner Weights (175# driver ballast, 1/2 tank of fuel):
LF 615, RF 611, LR 950, RR 869

Camber: LF -1.0, RF -1.0, LR -1.8, RR -1.8

Caster: LF 6.1, RF 6.0

Toe: LF .05, RF .05, LR .09, RR .08

Front Cross Camber: -0.0

Front Cross Caster: 0.1

Front Total Toe: .10

Rear Total Toe: .18

Rear Thrust Angle: .01