The heat from the rads is diverted away from the brakes and wheels downward. If you've ever stopped on a sandy or dry dirty road when the high speed fans kick in you'll see the tornado they produce by sending the air straight down.
PS, I replaced all of my front end undercarriage plastic pieces including these because the previous owner had ground them down presumably by driving up a steep rise in his driveway.
Last edited by paulofto; 04-29-2020 at 12:19 PM.
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