[03whitegsr]

The suspension has a certain amount of "bumpsteer" built into it from the factory. This is done so the tire toes in slightly as it travels away from the normal ride height. Think of it like an upside down U on how it behaves at stock height. Compression or extension from stock height and the tire toes in. At stock ride heights, the geometry is centered up so the bumpsteer is minimal under most circumstances (your on top of the upside down U).

Once you lower the car though, you generally end up deeper into the curve, you are now sitting on the side of the U. Instead of only a minor amount of bumpsteer around ride height, it can be a decent amount. Basic body roll motion now means it steers the wheels differently as one side is in compression and the other in extension.

This problem is compounded when adding camber and caster as now the outer/upper pivot points are in different points than originally intended so now the pivot points for the steering arm are no longer in the right positions at the ride height.

As far as roll center height, it doesn't change how much weight goes to which tires. That is dependent on track width, center of gravity height, and cornering force. Roll center does determine where the load goes int eh suspension components as well as jacking/anti-jacking forces. It has a ton to do with how the suspension moves (which controls contact patch) so it is important, but it doesn't control how much weight is on the tires.

I won't argue that ideal geometry wouldn't be great on a heavily lowered car. If we were designing a car from scratch, we could have better control over the geometry. Unfortunately, we have a strut/trailing arm suspension car and both of those suspension types suck for geometry. That hasn't stopped a LOT of fast BMWs over the years though. Even those heavily modified cars I bet still had less than ideal geometry despite the massive amounts of money poured into the programs. That's just the reality when dealing with production car based suspension systems.

Regarding the stance kids though...who cares if they figure this out? Let them crash their brains out. If they were interested in going fast, it would take them all of about 10 seconds to figure out they are doing it wrong. Stanced or not, it's been my experience that those type of kids manage to be stupid and crash the car regardless of the tires being stretched or the car being too low.