California replacement tire efficiency standards

The California Energy Commission has approved the first energy-efficiency standards in the United States for replacement tires sold for passenger vehicles and light-duty trucks. The regulations focus on “rolling resistance” to improve fuel economy for gasoline vehicles and extend the range of electric vehicles.

The mandate will be implemented in two phases: the first phase begins in 2029 targeting the most inefficient tires, followed by a stricter second phase in 2033. To assist consumers, the state will establish a “leaf” rating labeling system.

Environmental and economic projections suggest the standards could reduce carbon dioxide emissions by 2 million metric tons annually. While the commission estimates the regulations could save drivers nearly $1 billion per year in fuel and electricity costs, industry groups and local business owners have raised concerns. The U.S. Tire Manufacturers Association expressed worries regarding enforcement and compatibility, while other critics suggested the mandate could lead to higher consumer costs and reduced product variety.