New tire rule raises concerns: 'California is particularly vulnerable here' — Live Feedhttps://www.live-feeds.com/feed/new-tire-rule-raises-concerns-california-is-particularly-vulnerable-hereContinuously updated, source-cited coverage. California Establishes First US Efficiency Rules for Replacement Tireshttps://www.live-feeds.com/feed/new-tire-rule-raises-concerns-california-is-particularly-vulnerable-herehttps://www.live-feeds.com/feed/new-tire-rule-raises-concerns-california-is-particularly-vulnerable-here#u46006Fri, 21 Aug 2026 21:35:28 +0000California has approved new standards for replacement tires to increase fuel efficiency and protect the environment. The state is the first in the US to regulate the rolling resistance of aftermarket tires, phasing out models that do not meet these efficiency requirements. While the program aims to reduce vehicle emissions, tire manufacturers have warned that these regulations could lead to higher upfront costs for consumers. The rules focus specifically on the efficiency of the tires rather than the fuel efficiency of the vehicle itself.Why it mattersTire rolling resistance affects how much e