How Tire Friction Can Affect Fuel Economy | MotorWeek AutoWorld
In the latest episode of MotorWeek AutoWorld, host Greg Carloss dives deep into a less-discussed aspect of vehicle performance—tire friction and its significant impact on fuel economy. While replacing worn-out tires is essential for safety and performance, the surprising truth is that new tires can sometimes lead to a decrease in fuel efficiency.
To unravel the complexities of this topic, Greg speaks with industry experts Eric from Tire Rack and Scott, a research engineer specializing in tire friction. They explore the concept of rolling resistance, which essentially measures the energy required for a tire to roll down the road. As tires wear and tread depth decreases, rolling resistance diminishes, resulting in improved efficiency, particularly for electric vehicles (EVs).
Through their research, the experts found that the difference in energy consumption between new and worn tires can be as much as 9%. This finding highlights the importance of understanding how tire choice affects vehicle performance, especially for those who own hybrid or electric models.
Viewers will also learn about the various categories of tires available, such as low rolling resistance options designed specifically for EVs. Although there’s currently no standardized definition in the U.S. for what constitutes a low rolling resistance tire, manufacturers often use this term to differentiate their products.
The episode features a discussion on specific tire types that enhance efficiency without compromising safety. Greg and his guests examine a selection of tires, including those uniquely engineered for the Subaru Solterra, illustrating how manufacturer requirements influence tire design.
If you’re considering new tires for your vehicle, this segment emphasizes the importance of selecting tires that align with your driving conditions and expectations for fuel efficiency. Whether choosing all-weather tires or those designed for specific climates, understanding the trade-offs is crucial.
For more insightful features on automotive topics, tune in to MotorWeek AutoWorld, and stay updated through their website, social media channels, and by downloading the PBS app. Don’t miss this essential episode, where understanding tire choice could lead you to a more efficient ride!
Catch the full episode and discover how to keep your vehicle running smoothly while maximizing fuel economy!
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Video “How Tire Friction Can Affect Fuel Economy | MotorWeek AutoWorld” was uploaded on 11/22/2025 to Youtube Channel MotorWeek