WASHINGTON (Sept. 15, 2004) — The National Highway Traffic Safety Administration (NHTSA) has issued a new proposed rule on tire pressure monitoring systems, a little over a year after a federal court ordered it to scrap the old standard.
The new rule requires a four-tire direct monitoring system that kicks in at 25 percent below the vehicle manufacturer's recommended pressure but also leaves room for future technological innovation.
The 63-page proposal addresses the Rubber Manufacturers Association's petition for a minimum tire reserve load requirement to make up for the 25-percent pressure loss. It says the agency is studying data gleaned from tire manufacturers on tire reserve loads, and will amend the federal rule on tire and rim selection if it deems the RMA proposal is necessary.
According to an RMA spokesman, the proposed rule “doesn't address our most basic concern—that most motorists won't be warned before the tire pressure is unable to carry the vehicle load.”
The Tire Industry Association said it is still studying the document, and the Center for Auto Safety couldn't be reached for comment.