My car runs pretty hot, and this spring I intend to revamp the cooling system.
Concerning the radiator, what's the consensus of the recommended brand:
Behr, Nissens, OEM BMW?

The most expensive is OEM BMW. Behr, I believe is manufacturing them in CPR, some in S Africa. Not sure about Nissens. then, there are some made in Germany (Behr), which have the BMW logo shaved off - 3d party retailers can't sell them with BMW logo?

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Stable: e92is, e46 M54B25, e83 N52, e53 N62 - sold, e39 M54B30 R.I.P.