Performance Requirements for Determining Tow-Vehicle Gross Combination Weight Rating and Trailer Weight Rating
This document establishes minimum performance criteria at GCWR and calculation methodology to determine tow-vehicle TWR for passenger cars, multipurpose passenger vehicles and trucks. This includes all vehicles up to 13 000 lb GVWR. It is recommended that the performance requirements within be adopted for all vehicles with model year designation 2013 or later.
Rationale: This document is being revised primarily to correct some Table 1 standard trailer weight range descriptions and to clarify test setup, ballast procedures and test requirements in several areas.