The National Highway Traffic Safety Administration (NHTSA) issued a proposed rule to increase the tire test pressure for temporary-use spare tires (T-tires) from 52 pounds per square inch (psi) to 60 psi. The proposed change responds to a petition from the Tire & Rim Association (TRA).
In supporting the requested change, the NHTSA believes the revised test pressure will increase the stringency of the test while incorporating real-world conditions. The revision would also harmonize the U.S. standard with various international standards, including the United Nations Economic Commission for Europe and Japanese regulations.
For additional information, contact Stuart Gosswein.