On a 17 year on Canadian car, i would say #1 is rust, #2 is accidents (as any body repairs lead to rust). Everything else is easy to fix, and parts are all over the place.
Specialized in BMW recycling, all OEM used parts
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Most models E30 E36 E46 E90 E92 E34 E39 E60 E32 E38 E65 E66 X5 M3 M5
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