Originally Posted by Atlas Shrugged

I would question that logic as the variables could affect the resistance in a non-related fashion. As an example, a fast car such as a Porsche Turbo would not be the fastest car if a travel trailer was attached when compared to another performance vehicle such as an AMG E63 wagon. How would a solid rubber tire or hyper-inflated tire perform on their tests? A tire specifically tuned to perform well in real-world conditions might perform poorly on the static rolling drum test.