Ok, I out my EG sedan on the scales this summer and I am very perplexed with the results.

Front L - 717
Front R - 655

Rear L - 448
Rear R - 494

Anyone see the problem? As far as I knew you're supposed to adjust corner to opposite corner to try to even the weights out side to side. Because, in theory your Front L plus your Rear R are supposed to weigh the same as your Front R and Rear L. As you can see, this is not true for my car, if I try to raise the Front L perch to get rid of the extra 62lbs that side has over the right I'll just make the rear worse... Is there something I am missing? Should I just mess with it and see what I can do?

BTW, this is without driver with a 1/2 tank of gas, with me in the car it gets even worse, my front left is 97 lbs heavier than front right.

Also, it's only gonna get worse when I replace my 40lb Optima Yellow Top battery with a lightweight one (you know where that sits on an EG)

 

So you have too much weight on the front-left tire and the idea is to lower the weight. Lowering the weight has the effect of compressing the spring *less*, correct? That means you have to *lower* the front-left perch. What you want is the other tires to take up more of their share of the load...

A way to think about it is to visualize your car as a solid block supported by four adjustable screws. It can be hard to get all four with the same weight on them, but it's very clear when one screw is too long, it lifts weight from the adjacent corners, right? So it has to be lowered.

This is helpful too: http://www.grmotorsports.com/cornerweight.html

 

It sounds to me like you assume that your car will naturally have a 50/50 left right static weight distribution. Of course it doesn't. With some work moving weight around inside the vehicle, you can achieve this, and it will make your handling much more consistant, but there is no law of physics etc to say that the weight is naturally balanced 50/50 left and right.

Static weight distribution is different than corner weighting. Static weight distribution is determined by physical placement of weight in the vehicle, while crossweighting is achieved by adjusting the ride heights.

Crossweighting w/out taking the driver's weight into account is a complete waste of effort.

What you want to do, like you said, is get the front L + rear R = to the front R + rear L, with the driver in the car. Start by lowering your Front L AND your rear R to reduce their weight. This will increase weight on the Front R and rear L.

 

Here's the analysis:

Crossweights :

LF + RR = 717 + 494 = 1211
RF + LR = 655 + 448 = 1103

Total weight = 1211 + 1103 = 2314

Ideal crossweight = Total weight / 2 = 2314 / 2 = 1157

Percent crossweight LF-RR = LF + RR / Total Weight * 100 = 717 + 494 / 2314 * 100 = 52.3%

Percent crossweight RF-LR = RF + LR / Total Weight * 100 = 655 + 448 / 2314 * 100 = 47.7%

This is really not that bad for a car that has not been cross weighted.

So what you need to do (assuming you have coil overs) is to raise the sleeves on the RF and LR a little and lower the sleeves on the LF and RR a little. Oh, one more thing. You need to do corner weights with the driver in the car. Otherwise you might as well not do them

 

Wow! thanx, very informative.

Here are the weights with me in the car.

LF - 788
RF - 691

LR - 535
RR - 515

Let's see if I can figure this out.

LF + RR = 788+515 = 1303
RF + LR = 691+535 = 1226

Total weight 1303+1226 = 2529
Ideal crossweight 2529/2 = 1264.5

Crossweight LF/RR = 51.52%
Crossweight RF/LR = 48.48%

Cool, it's even better with me in the car.

Thanx guys.