Its far from silly, first have a read of my post above, which covers the subject of weight (yet again). Secondly, while it is not a problem to have a one and two tonne car with the same weight distribution (I never said its was); it is highly unlikely that they would have the same weight transfer characteristics and centre of gravity. However this is still getting away from the point that weight is not a factor and weight transfer is a second order effect. You (and others) can argue against this all you want; the simple truth of the matter is that you can not change the laws of physics. I have provided a huge amount of links, explenations and data to support what I know to be true. Please read them (and try to understand them) before claiming that they are incorrect.