Yup,bigger wheels lowers rpm, skinnier tire less rolling resistance.Look at the big skinny tires BMW put on their I3 for mileage.
Almost as skinny as the old Volkswagen bug tires.
Internet source BMW
BMW i3 tires were designed to be "skinny" (narrow) primarily to maximize the car's range by reducing rolling resistance, which is crucial for an electric vehicle; the tall and narrow tire design minimizes friction with the road, allowing the car to travel further on a single charge.
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