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Aftermarket Brake Linings Which Meet FMVSS 121 Criteria for Original Equipment Linings and Approximate Output Torque Values at 40 PSI Brake Application
The Performance Review Institute (PRI)—an affiliate of the Society of Automotive Engineers (SAE)—Brake Lining Performance Review Committee has complied this list of aftermarket brake linings that meet the brake dynamometer requirements specified in FMVSS 121. All original equipment linings must meet these requirements; they are optional for aftermarket linings.
The linings are listed in ascending torque value as measured during the test at 40 PSI . Order is not based on brake lining quality. The aftermarket brake lining list is intended to help fleets replace worn OEM linings with replacement linings of similar torque value to help ensure torque balance. The higher the torque value the more aggressive the brake lining.
PRI and TMC stress that the review of this information does not constitute PRI or TMC approval, certification, endorsement, or recommendation of the products; it simply verifies that the brake lining material, as represented by the data presented to the PRI Brake Lining Performance Review Committee, has demonstrated its ability to meet FMVSS 121 requirements, when installed on a 16.5x 7 brake and operated in a configuration specified in TMC RP 628, “Brake Lining Classification.” Brake lining products that are not on the list either were not tested, or did not pass. Only successfully tested linings are listed.
The torque of an aftermarket lining should approximately match that of the original equipment lining it is replacing. The vehicle manufacturer should be able to supply the original equipment lining formulation when supplied with the vehicle identification number. Brake lining output torque—by itself—should not be used to measure total brake system performance. Due to variability in testing and lining composition, torques shown in the aftermarket lining classification list are approximate only.
TMC permits distribution of this Appendix. However, the preceding preamble must appear in its entirety with any publication of the brake lining list. |
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