Quote:
Originally Posted by industrial
CFRP propeller shaft.
The new BMW M3 Sedan and new BMW M4 Coupe also feature a CFRP propeller shaft. CFRP’s high rigidity and low weight mean that the drive shaft can be produced as a single-piece component without a centre bearing. This provides 40 per cent weight savings over the previous model, and the reduction in rotating masses results in sharper throttle response. The use of carbon in these models is a reminder that BMW is a global leader in high-strength, lightweight CFRP construction, and that it was BMW who brought out the first mass-production vehicle with a body consisting entirely of this material – the innovative BMW i3.
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One has to remember this was released by the marketing department. Their job is to create desire and justify the product. Owners of this car can tell their friends, and themselves, that is a great performance part. BMW also likes sprouting how 50/50 weight distribution is optimal as well.
Disclosure. I have a cf drive shaft. Am I pleased with it? Yes, and that's all that matters. But then again, my battery cost me close to AUD$1100.