Quote:
Originally Posted by mnmarcus
So far it looks like adding tires will not lower rolling resistance overall. If anyone knows if this is true that would be great.
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Different tires have dramatically different rolling and aero characteristics. Tire selection WILL have a huge impact on your fuel economy, with knobby tractor tires probably delivering the worst economy, and slick big rig tires probably being the best. YMMV, HTH.