By SEMA Washington, D.C., Staff
The National Highway Traffic Safety Administration (NHTSA) updated Federal Motor Vehicle Safety Standard (FMVSS) No. 110 to clarify that special trailer (ST) tires may be installed on new trailers with a gross vehicle weight rating of 10,000 lbs. or less. When FMVSS No. 110 was amended in 2003 as part of the “Tread Act” reforms, the regulatory text could be read as excluding installation of ST tires on smaller trailers. NHTSA also updated the 2003 rule to exclude trailers from a requirement that a tire stay on its rim if there is a sudden loss of tire pressure since that provision was only intended to apply to motor vehicles, not trailers.
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