I don't agree there is a difference btw F2x and F3x series, when you check the parts on realoem.com the same parts apply to 440i LCI and M135i.
Also you'll need to drop front subframe too, not just rear, unlike E9x chassis.
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2017 M550i | Sophistograu
Previous cars: 2014 F30 ActiveHybrid 3 | 2012 f20 M135i
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