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BMW M3 G80 on a lift with the front bumper off exposing the S58 radiator and heat exchanger
Latest Cooling
Jun 9, 2026 15 min read

S58 Cooling Upgrades: How to Stop Heat Soak

Which S58 cooling upgrade to buy first for the G80 M3, G82 M4, G87 M2, X3 M and X4 M: how the three cooling circuits work, heat exchanger...

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