Quote:
Originally Posted by oldtamiyaphile
As speed increases so does centrifugal force on a tyre. It would make sense to me for CRR to drop as speed rises- the tyre essentially becoming harder.
Cd isn't a constant either, we just tend to treat is as such.
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The only thing I've run across had to do with the first Audi Quattro.
They mentioned that a 'driven' tire had less rolling resistance than a 'coasting' tire (my terminology),and that over 100-mph,the Quattro actually had less rolling resistance than it's 2WD stablemate.But only above 100-mph.