You are correct...I know there's alot more adjustment there as far as being able to go lower I'm just wondering what the cutoff point is as far as negatively effecting handling and suspension geometry and basically everything you just said lol. If I could go -1.5 from factory height without effecting handling in a negative way at all that is wonderful because I know I'm not going to want or need lower than that I believe that is about perfect imo as far as looks. Out of the box doesn't look bad by any means so if I need to leave it there to have proper handling that would not be the end of the world by any means...
Right, in which case you generally look at the lower control arms.
The lowest you can go on a car is when the control arms are parallel to the ground.
Once you go lower than that and the control arms start pointing upward, then your roll centre are seriously out of place.
The total ride height will depend on what wheels you are using, as that can affect ride height also depending on how you measure the setup.
Of course, alignment plays a big role also.
There isn't a magical right answer many times, the suspension is one part of the car that control vehicle dynamics.
You have to look at all the other parts to get a total picture of what the car will do, and then adjust the setup to suit what the driver wants to do.
That is one reason for coilovers, as it provide a lot of adjustment for the driver to tune the setup to his preference; and everyone will want something a little different.
Jerrick