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Old 11-12-2012, 08:12 PM   #28
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Originally Posted by gkirk View Post
Stickier rubber means more traction = more friction = less mileage.

Bigger wheels = heavier (usually) and much worse rotational inertia since the weight in the wheel is further toward the edge = worse mileage.
Or in other words with bigger heavier wheels you have four flywheels by definition at each corner. A flywheel being a device that is used to store rotational energy. Just be gentle getting them up to speed and your fuel economy will be quite fine.
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