California passes tyre efficiency law
In California, car tyres fitted as OE have to conform to federal fuel economy standards. However, the state argues that this should also apply to replacement tyres and has passed a law requiring the California Energy Commission (CEC) to develop efficiency standards, measured by rolling resistance. These standards will be in place by July 2007 and take effect a year later. Individual tyres will not have to be labelled, but retail stores will have to display efficiency lists.