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2021–2025 BMW M3 Radiator & Cooling FAQ's

Please read our FAQs page to find out more.

Will upgraded cooling help repeated laps in a G80?

Yes—thicker radiators/heat exchangers and improved ducting reduce heat‑soak. The S58’s multiple coolers benefit from higher‑efficiency cores and proper bleeding.

Is an oil cooler necessary for hard driving?

Aggressive canyon/track use benefits from a thermostatic oil cooler to keep temps stable. Route lines away from heat sources and shield with sleeves.

How do I fight charge‑air heat‑soak on the G80?

Seal shrouds, improve airflow, and upgrade to a larger heat exchanger and charge‑cooler core. Keep the A/C condenser clean to minimize pre‑heating.