Originally Posted by swamp2
Sounds like a real upper limit on what could be saved. The existing hood weighs 10 kg and trunk weighs almost 11. Doors are 18 kg ea. Throw in an extra 5 kg for a steel instead of the light E92 aluminum hood and you have about 62 kg. If you cut 66% of the weight (very agressive design) you would save right around 41 kg, almost 100 lb.
I was interested what a mixture of carbon and lightweight construction could and would bring to bigger cars, like 5er and 7er.
At the end it would be very nice to get a 7er that weights as much as the new F20 3er. Handling in everyday traffic would reach new levels.
However, there is always the price and a very slow progress in auto industry.
The investment in this lightweight would be very intense while the fuel problem at the opposite end (hydrogen cells or artificial oil) remains unsolved.
The fuel prices (heavily taxed here in Europe) are already having a heavy toll on work migration and "freedom" of driving. To manage to get independent from the tax hike would be a real revolution here