Quote:
Originally Posted by nmgolfer
Most hub caps are like egg beaters chopping their way through the air. But they look good and they provide much needed cooling for brake pads. We can put smooth hub caps on a reduce both the noise (aeroacoustics) and the "egg beater" form drag... but we may need to replace the brake pads much sooner than otherwise (unless we drive a prius that is).
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I don't recall whose signature, but it goes "if you are using the brakes you are doing it all wrong." If you are hypermiling you shouldn't be overheating the brakes so smooth covers should be OK for most of us on this site. They are still open to the air on the inside of the wheel after all.