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It looks a bit risky even getting into this discussion. Whole books have been written on automobile handling. One or more would probably be a good idea for most Elise dirvers.
TimMullin is absolutely correct about the hammer and the arrow. And aerodynamics does have a significant impact on automobile handling. It is not as significant as the tire forces, but it is significant. The tire forces get much more complicated. The lateral force a tire can generate depends on tire patch, slip angle, weight on the tire, camber, coeficient of friction, accelleration or braking force and probably a lot of things I haven't listed. And it is a transient force. It is continually changing.
Randy is right about the front weighted car generally being more stable in a straight line, but it is because the combination of aerodynamics and tire force moving the effective Center of Pressure to the rear of the Center of Gravity. It is possible to set up a rear weighted car so the combination of aeordynamics and traction are behind the Center of Gravity. It is just not as easy to keep it there!
Also, to khamai, I think the caster will try will try to line up the front wheels with the direction you are going rather than where the front of the car is pointed. I can't say that I've tried Bobby Ore's method, but there is some logic to it.
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