Quote:
Originally Posted by Kyle2k
Yes, on a car designed from a sedan, you may expect to see little or no weight change. However, the Camaro is a coupe from the ground up- it is just sharing a wheel base from the platform so I think it might come out lighter- time will tell.
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Doesn't really matter if a car is coupe only or not. The problem is side impact and the space between the A- and B-pillars. An over-simplified way to look at it is like this: if you have a sedan (with a B-pillar right in the centre) the doors just kinda tie things together. But with a coupe, the door is now at the centre of the impact zone. It has to take the brunt of it, and then transfer that back to the rest of the car. That takes a fair amount of steel. Further complicating matters is the fact that a coupe door is longer, which means that the whole thing has to be more robust to take the same kind of load as a smaller door would.
I'm sure there are other things going on in the rest of the car too, where physics favour 4 doors over 2, but I'm not knowledgeable about them.