California regulators have approved new rules that will restrict the sale of replacement tires based on their energy efficiency, with the first phase taking effect in 2029 and stricter standards coming in 2033. The California Energy Commission (CEC) says the rules are intended to reduce fuel and electricity consumption and lower costs for consumers over time.
The standards focus on tire rolling resistance, which measures how much energy a tire consumes as it rolls. The CEC voted unanimously to adopt the rules, which will gradually phase out replacement tires that fail to meet specified efficiency standards.
