Federal Motor Vehicle Safety Standards; Tire Selection and Rims

摘要

This document proposes to amend Federal Motor Vehicle Safety Standard (FMVSS) No. 110 to make it clear that special trailer (ST) tires are permitted to be installed on new trailers with a gross vehicle weight rating (GVWR) of 4,536 kg (10,000 lbs.) or less. It also proposes to exclude these trailers from a vehicle testing requirement that a tire must be retained on its rim when subjected to a sudden loss of tire pressure when brought to a controlled stop from 97 km/h (60 mph). After careful review, the agency believes that these two revisions are appropriate and would not result in any degradation of motor vehicle safety.