Thread: 10% = 5%
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Old 01-17-2021, 10:41 PM   #42 (permalink)
JulianEdgar
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Quote:
Originally Posted by ME_Andy View Post
It's not Aerohead's rule, it's a GM engineer's rule.

Personally, I've come around to believing you know a thing or two and I'm happy to have you post here. I just want you to take a chill pill beforehand.
It was a GM rule back in 1998 at 55 mph. It was then picked up and spread by Aerohead here as the title of the thread suggests: 10%=5%

It is one of the many rules of thumb that Aerohead has put up here that, I think, cause far more harm than good.

Rules of thumb are bad news in any car modification area - suspension, engine management - and aerodynamics.