Theblaze iconTheblazeSep 11, 2026 ~1 min source read

California is coming for your tires next

If you drive a performance car, you probably care a lot about grip and handling. A Mustang owner who takes his car to the track has different priorities again.

California is coming for your tires next

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If you drive a performance car, you probably care a lot about grip and handling.

A Mustang owner who takes his car to the track has different priorities again.

On a recent episode of "The Drive," my co-host Karl Brauer and I discussed new California rules targeting the rolling resistance of replacement tires.

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The useful part

If you drive a performance car, you probably care a lot about grip and handling. A Mustang owner who takes his car to the track has different priorities again. On a recent episode of "The Drive," my co-host Karl Brauer and I discussed new California rules targeting the rolling resistance of replacement tires.

How it works

  • Beginning in 2029, tires sold in the state will have to meet new efficiency requirements, with the standards becoming more stringent in the years that follow.
  • Lower rolling resistance means a tire requires less energy to keep moving, which can improve fuel economy in a gasoline vehicle and range in an EV.
  • Grip, tread life, road noise, ride quality, wet-weather performance, handling, and efficiency all matter, and manufacturers design different tires for different vehicles and drivers.
  • The tire you want on a Prius isn't necessarily the tire you want on a Mustang — or a 1,000-horsepower performance car.

Details worth keeping

Most drivers don't spend much time thinking about tire regulations. You buy the tire that fits your vehicle, your driving, and your budget. If you live somewhere with real winters, you may switch to snow tires.

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