Vehicle physics and Center of Gravity

I've got a problem with the center of gravity on my car. If I make the center of gravity (0,-2, 0) to increase its stability, my car tends to drift off to the side. If I turn off the function that sets the center of gravity, it stops drifting. Is there any way I can fix this?

Thanks, Elliot Bonneville.

you could try using a centerOfMass object as a child of the car using code like this:

var centerOfMassObject : Transform;

function Update () {
     rigidbody.centerOfMass = centerOfMassObject.localPosition;
}

using this you can tell where the center of mass is and position it by hand...

hope this helps!