1974 BMW E9 3 0CS Coupe for sale The item BMW E9 3.0 cs coupe used 40cm Petri steering wheel excellent serial # 1.1097381 is in sale since Tuesday, April 28, 2020. Dvd / Cd Player (7). You are looking at a used but excellent condition Petri sport steering wheel serial # 1.1097381 stamped on the hub, this wheel is the large 400 mm or 40cm in diameter, it has the E9 hub so it will fit all e9 models.