Thread: Tire size
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Old 08-08-2008, 03:15 PM   #3 (permalink)
Bullockracing
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Icarus - '11 Ford Mustang GT
90 day: 20.71 mpg (US)

Walter - '02 Chevrolet Suburban LT
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There is no cookie-cutter answer to that. There are many factors (including frontal area - the higher ride height is worse) than just overall gear ratio. Having a LRR tire is more critical than minor variations in tire diameter, all else being equal.
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