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Yes like everyone said, the light weight wheels affect mpg more when there is more accel and decel. In city driving, there is a lot of this, so it would make a more sizable difference. The VX, which is designed with fe in mind, has light weight wheels and small tires, and since everything else on the car is basic and simple (except the engine), I figure the difference must be significant enough to warrant the expensive wheels. honda could have made the car more aero, but they didn't do much. who knows why. I think that the light wheels are a good match for the tall gearing. It makes accelerating from low speeds with tall gearing easier. I notice that the car is really easy to stop at low speeds...this is partly just because of the light weight of the car, but probably also the light wheels.
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