This specification covers the general requirements for the standard rib tire for pavement friction
testing. The tire covered by this specification is only for use in evaluation of tire-pavement
friction.
AASHTO M 261-1996 history
1970AASHTO M 261-2018 Standard Specification for Rib-Tread Standard Tire for Special-Purpose Pavement Frictional-Property Tests
1996AASHTO M 261-1996 Standard Specification for Standard Tire for Pavement Frictional-Property Tests