2001 Mercedes ML-Class Owner's Manual - Page 195

Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data Index Driving instructions Loading a trailer When loading a trailer, you should observe that neither the permissible GTW, nor the GVWR are exceeded. Maximum permissible values are listed on the safety compliance certification labels for the vehicle and for the trailer to be towed. The lowest value listed must be selected when determining how the vehicle and trailer are loaded. We recommend loading the trailer in such a manner that it has a tongue weight (TW) between 10% and 15% of the GTW. The tongue weight at the hitch ball must be added to the GVW to prevent exceeding your Mercedes-Benz tow vehicle's rear GAWR. 192 Checking weights of vehicle and trailer To assure that the tow vehicle and trailer are in compliance with the maximum permissible weight limits, and to know the actual weights, have the loaded rig (tow vehicle including driver, passengers and cargo, trailer fully loaded) weighed on a commercial scale. Check the vehicle's front and rear Gross Axle Weight (GAW), the GTW and TW. The values as measured must not be exceeded, according to the weight listed under "Vehicle and trailer weight and ratings".