Quote:
Originally Posted by gravitylover
^^My mpg drops at least 10% in the winter for a variety of reasons, biggest being the winter blend fuel next being winter tires. When the fuel changes in the fall it drops 6-8% almost immediately and that's before I swap the shoes for the season. .
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I run standard all-season tires on the OEM wheels. I definitely see a drop in winter. Here's a chart showing it by month. The black tick marks are where tires were changed.