I'm beginning to think that the added weight from a weight penalty effects the car more then the same weight but added from fuel. So my questions is does anyone know if this is the case? Take make sure you get this here is an example. Let's say you have 50l fuel + 50kg weight penalty. And then you go with 100l fuel and no weight penalty. Does the added weight from the weight penalty effect the cars performance more then it would if the added weight was replaced by an equal ammount of fuel? The cars total weight is the same but i feel that the added weight from the penalty is worse to the cars performance then an equal weight of just fuel. Does anyone know if this is true?