Quote:
Originally Posted by RCZ
From what I can remember (I learned about this a while back) is that there are two reasons...one was to evacuate hot air from the exhaust system/brakes and the other had to do with eliminating high pressure zones underneath the car which hurt downforce... letting the air out of the wheel well, in theory, gets rid of those high pressure zones...
It can also be used to create airflow across coolers...
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Yup - we race R/C cars and removing the lower rear end of the body helps to increase the rear down force - makes a big difference esp at the end of the straight away going into the sweeper. IIRC the NISMO 350Z has the same area removed - likely for increased downforce as well....