California regulators on Monday approved new rules that will restrict which replacement tires can be sold across the state in an effort to meet energy-efficiency standards.

The new regulations, unanimously adopted by the California Energy Commission (CEC), will phase out tires that fail to meet these standards — a move that could restrict a large portion of the tires currently available to drivers.

“This ultimately is about protecting consumers,” said David Hochschild, Chairman of the California Energy Commission, as reported by KCRA-TV. “I see this as sheltering the public from higher costs in the long run.”

Fox News Digital has reached out to several tire manufacturers, including Goodyear, Michelin, and Bridgestone.

The new rules target rolling resistance: the amount of energy it takes for a tire to roll down a road. Lower rolling resistance allows vehicles to consume less gasoline or electricity.

While factory-installed tires on new vehicles typically feature low rolling resistance, drivers often replace them with cheaper, less efficient tires. The new rules aim to ensure that replacement tires maintain energy efficiency levels similar to those of original factory tires.

The first phase of the program begins in 2029, targeting the most inefficient replacement tires on the market. The allowable rolling-resistance threshold drops even further starting in 2033.

According to the CEC, California drivers could save $79 in fuel or electricity costs over four months during Phase 1, and about $153 over seven months during Phase 2. The CEC estimates that Phase 2 rules will add an average of about $6.50 to the cost of each tire, the New York Post reported.

“These regulations are a tool within our authority that can save money for every Californian,” said Commissioner Nancy Skinner.

Goodyear voiced concerns over the mandate, arguing that it would pass additional costs onto consumers. Representatives noted that around 70% of tires currently sold in the state would be eliminated by 2033.

Several categories are excluded from the new rules, including snow tires, used and retreaded tires, deep-tread off-road tires, motorcycle tires, and tires sold for emergency vehicles.

The regulations stem from Assembly Bill 844, a 2003 California law requiring the commission to set state tire-efficiency standards.