Crescent wrenches are for plumbing fixtures.

When I was being trained, they were called "fits-all-fits-nothing" and their use on a vehicle was a cause for derision. We did use them on the shop waste oil drain system. And if you hold them at the end they make an equally good hammer as wrench.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue