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Old 11-12-2009, 02:29 AM   #10 (permalink)
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Camryaro - '92 Toyota Camry LE V6
90 day: 31.12 mpg (US)

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Have you tested the donuts RR in order to see if there's a significant difference between them and a small LRR tire? Besides, at best you could pick up a few mpg at 70-75mph if you cut the rolling resistance in half compared to whatever is on there now. If you cut the drag coefficient in half like basjoos did, you'll gain 20+mpg at 70-75mph, and there won't be any worries about undesirable operation.
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