Polyurethane bushings for BMW 3 Series E30 / E36 Compact / 5 Series E28 / 6 Series E24 / rear stabilizer bar mount with Ø 16 mm — TA Technix

The original bushing is made of rubber: it filters well, but deforms under load. When cornering or braking, the arm moves by a few millimetres and the geometry changes during the manoeuvre - this is the vagueness between the steering wheel and the wheels.

Polyurethane deforms much less: the connection becomes precise and repeatable, and the car responds at the same point every time. In return, more road noise and vibrations reach the cabin, especially when cold.