I had a new experience today. I took my convertible to the tire shop to have some new tires put on. They raised the car by the frame rails just enough off the ground to work on the tires. I needed to get something out of the car, but when I tried to open the door, it wouldn't budge! Tried the passenger side door, same thing. As soon as the car was back on the ground, doors opened no problem. So convertible bodies definitely do flex!