J2807_202002 Performance Requirements for Determining Tow-Vehicle Gross Combination Weight Rating and Trailer Weight Rating

Some of the tires specified in Table 1 have been discontinued and are no longer available. Specifying steering wheel angle gradient as an alternative to understeer gradient eliminates the need to measure the steering ratio and makes it easier to deal with systems that modify the front wheel angle relative to the steering wheel angle and vehicles that steer the rear wheels. There is now a minimum temperature specification for the sway damping test since lower temperatures increase sway damping. The maximum equivalent tongue length (ETL) for trailer K has been corrected.