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Old 09-14-2008, 09:54 AM   #9 (permalink)
Bicycle Bob
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Join Date: May 2008
Location: N. Saskatchewan, CA
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Appliance White - '93 Geo Metro 4-Dr. Auto
Last 3: 42.35 mpg (US)

Stealth RV - '91 Chevy Sprint Base
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In the classical literature, tall, skinny wheels have the lowest rolling resistance. Wide tires are bad for air drag, but the radial-belted construction may have changed the traditional advice. Unfortunately, the data is proprietary information, so about all we can do is look up the LRR tires, such as the Bridgestone Potenza RE92 and choose light wheels to suit them. Larger overall diameter will change the speed and mileage readings, but also reduce engine RPM, which usually helps.
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