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Tire Choices
If purchasing tires, consider rolling resistance. Several manufactures, including Michelin, offer lower rolling resistance tires. This can be worth a few percentage points in economy, and can offset the added cost of the tires.
Many cars today come with lower rolling resistance tires. But the aftermarket does not at all stress this.
Using wider then normal tires increases resistance.
Increasing the tire pressure by as little as two psi over the sticker in the door has a very beneficial effect on fuel economy.
Finally, it is especially important to check tire pressures as the seasons go from warmer to cooler because the falling temperatures cause a fall in tire pressure.
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