Audi is introducing new, lightweight suspension springs made of fibre-glass reinforced polymer (GFRP) in an upper mid-size model before the end of the year.
The GFRP spring, which Audi developed in collaboration with an Italian supplier, even looks different to a steel spring. It is light green, the fibre strand is thicker than the wire of a steel spring, and it has a slightly larger overall diameter with a lower number of coils.
Most importantly it is 40% lighter. Whereas a steel spring for an upper mid-size model weighs nearly 2.7kg, a GFRP spring with the same properties weighs just 1.6kg. Together the four GFRP springs reduce overall weight by roughly 4.4kg, half of which is unsprung mass. Continue reading “Audi unveils cutting edge suspension springs” »