Overview
- The California Energy Commission voted unanimously to adopt the Replacement Tire Efficiency Program on Monday, creating the nation’s first statewide rules for replacement passenger and light‑truck tires.
- The rule sets phased rolling‑resistance ceilings that take effect January 1, 2029 and January 1, 2033 and adds minimum wet‑grip requirements plus a public CEC database for certified models.
- Manufacturers and brand owners must test, certify and report each tire model to the CEC, which can audit, retest, remove noncompliant listings and pursue enforcement against retailers who knowingly sell uncertified tires.
- The CEC projects roughly $1 billion in annual fuel savings and about 2.0 million metric tons of CO2 avoided, while industry groups and independent retailers warn of higher upfront costs, reduced budget options and potential inventory shortfalls.
- Stakeholders expect the market impact to be felt upstream as makers plan testing and certification, legal challenges and cross‑border sales issues are likely to follow, and the regulation could influence national tire supply given California’s market size.