https://www.live-feeds.com/feed/california-becomes-first-state-to-regulate-the-squish-of-car-tiresContinuously updated, source-cited coverage. https://www.live-feeds.com/feed/california-becomes-first-state-to-regulate-the-squish-of-car-tireshttps://www.live-feeds.com/feed/california-becomes-first-state-to-regulate-the-squish-of-car-tires#u45359Thu, 20 Aug 2026 02:20:08 +0000California regulators approved rules limiting the types of replacement tires drivers can purchase to improve fuel efficiency. The state is the first to regulate the "squish" of car tires to ensure they meet specific efficiency standards. These measures aim to lower fuel consumption and could potentially save drivers $1B annually. While the rules target tire efficiency regardless of the vehicle's own fuel economy, they restrict the available market for replacement tires.Why it mattersTire rolling resistance affects how much energy a vehicle uses to move. By mandating more efficie