Why does gas mileage drop with new tires?
Jun 13, 2023, Posted by : Nia Latham
As a driver, I've often wondered why gas mileage tends to drop when I get new tires. After some research, I found out that this is mainly due to the increased rolling resistance of new tires. This resistance is caused by the deeper treads and stiffer sidewalls in new tires, which require more energy to move. In addition, the manufacturing process can leave a thin layer of lubricant on the tire surface, which further contributes to the increased resistance. Over time, as the treads wear down and the tires break in, the rolling resistance decreases and gas mileage improves.
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