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      11-09-2021, 10:00 PM   #12
TopJimmy
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Drives: 2023 M3 Comp xDrive
Join Date: Jul 2019
Location: Chester County, PA

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You gotta give kudos to Poiseuille for that thermograph pic. It clearly shows how the dual cooling systems (radiators and intercoolers) were engineered. The glowing driver wheel radiator is clearly the main heat sink coming off the engine thermostat, it's job to make sure the center radiator isn't too hot (because the center AWIC goes right in front of it). You can see in the picture the darker AWIC in front of the bright center radiator, and then the passenger wheel AWIC is even darker/cooler before its coolant goes up to the TMIC.
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