Did any of you notice this when buying a car or any part for it? One obvious thing is a 4-door vs. its 2-door sibling. While the Lancer GSR coupe is less expensive than a GLXi sedan equivalent, 2-door is generally more expensive than a 4-door.

Take for instance the 3-Series. Why is it that less sheetmetal costs more? A coupe is simpler in design than a sedan. You need less reinforcements for it. Most, if not all 2-doors don't even have B-pillars unlike 4-doors. Considering that the list of equipment is the same, the coupe still has a higher sticker.

Another is in tires. You pay more for less rubber. Lower profile tires usually cost more. Why is this?

If you know of any technical facts behind this, please post up.

Thanks