Thread: Experiment: smooth wheel discs tested A-B-A - 4.6% mpg improvement @ 65 mph
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Old 05-23-2013, 01:36 PM   #309 (permalink)
Frank Lee
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Quote:
...most cars and trucks had steel wheels with small holes for weight reduction.
As far back as 1959, GM was touting brake cooling vents in their steel wheels and full wheel covers.
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