Just_me

Chevrolet Corvette C5 9,100 Nm/deg
Lamborghini Countach 2,600 Nm/deg
Aston Martin Vanquish 28.500 Nm/deg
Ford Focus 3d 19.600 Nm/deg
Ford Focus 5d 17.900 Nm/deg

Maserati

Guys I can't remember if this is correct but Aluminium tend to "Break" if a force is applied to it after some point, where is Steel is more "Flexible" to applied forces.

Mr. M

Yeah.

Upon reviewing the list, the Passat's stiffness is impressive too: 32,000Nm/degree, making it one of the stiffest cars together with the Phaeton.

One interesting fact I read up is that Porsche 911 convertibles have iron beams that slide between the doors and the rest of the body after you have closed the doors, effectively increasing torsional rigidity while on the movie. It deactivates when you engage the open handle to open the door.

But as we can see from these numbers, torsional rigidity doesn't play a very big part in a car's performance if other factors don't support its benefits.

Mr. M

I have read about something similar too. That's why cars that are made with poor aluminium composites like Jaguars have warping problems.