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Old 02-27-2012, 03:23 PM   #5 (permalink)
Big Dave
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Join Date: Jan 2008
Location: Steppes of Central Indiana
Posts: 1,319

The Red Baron - '00 Ford F-350 XLT
90 day: 27.99 mpg (US)

Impala Phase Zero - '96 Chevrolet Impala SS
90 day: 21.03 mpg (US)
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Bigger diameter tires are counterproductive.

Rotational moment of inertia goes up with the square of the radius. Bigger tires mean four bigger "flywheels" that you have to pour energy into to accelerate everytime you pull away from a stop.

Gearing works and bigger tires don't.
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2000 Ford F-350 SC 4x2 6 Speed Manual
4" Slam
3.08:1 gears and Gear Vendor Overdrive
Rubber Conveyor Belt Air Dam
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