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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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Alpine White BMW F80 M3 with the S55 engine, front three quarter view at sunset
Cooling
Feb 11, 2026 13 min read

S55 Cooling Upgrades: How to Stop Heat Soak

Why the S55 heat soaks on the F80 M3, F82 M4 and M2 Competition, which charge cooler, heat exchanger, oil and DCT cooler to buy first for street or track, maker test...