a car axle made of fiberglass? Anyone who thinks fiber composites only belong in light car bodies and racing cars will frown at the thought of their use in load-bearing parts. But for decades these materials have shown what they’re made of in aviation. Properly constructed, they exceed the strength of high-tensile steel. At the same time, they can also have built in elasticity – a positive aspect of their extremely resilient structure. The versatility of fiber-composite materials also makes them interesting for use in chassis: durability and high functionality are needed here; at the same time, lightweight structures offer many advantages. Zf brings together these seemingly contradictory qualities in a lightweight concept study for a passenger car rear axle.