I normally do M10 to 75Nm, M12 to 100, M14 to 165Nm
If you look at an engineering chart for torques those will be about right for high tensile bolts. Most bmw stuff is 10.9 in the suspension . You have to use common sense though, sometimes huge threads are used for drain plugs etc so I would only apply these for stuff like suspension and drivetrain bolts.
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