2010 Mercedes E-Class Owner's Manual - Page 216

214 Tires and wheels GAWR (Gross Axle Weight Rating) The GAWR is the maximum permissible axle weight. The gross vehicle weight on each axle must never exceed the GAWR for the front and rear axle indicated on the certification label located on the driver's door B-pillar. Maximum permissible tire inflation pressure This number is the greatest amount of air pressure that should ever be put in the tire. Normal occupant weight The number of occupants the vehicle is designed to seat, multiplied by 68 kilograms (150 lb). GVW (Gross Vehicle Weight) The GVW comprises the weight of the vehicle including fuel, tools, spare wheel, installed accessories, passengers and cargo and, if applicable, trailer tongue load. The GVW must never exceed the GVWR indicated on the certification label located on the driver's door B-pillar. Operation Occupant distribution The distribution of occupants in a vehicle at their designated seating positions. Production options weight The combined weight of those installed regular production options weighing over 5 lbs (2.3 kilograms) in excess of those standard items which they replace, not previously considered in curb weight or accessory weight, including heavy duty brakes, ride levelers, roof rack, heavy duty battery, and special trim. GVWR (Gross Vehicle Weight Rating) This is the maximum permissible vehicle weight of the fully loaded vehicle (weight of the vehicle including all options, passengers, fuel, and cargo and, if applicable, trailer tongue load). It is indicated on the certification label located on the driver's door B-pillar. Kilopascal (kPa) Metric unit for air pressure. There are 6.9 kPa to 1 psi; another metric unit for air pressure is bar. There are 100 kilopascals (kPa) to 1 bar. PSI (Pounds per square inch) A standard unit of measure for air pressure. Recommended tire inflation pressure The recommended tire inflation pressure for normal driving conditions is listed on the Tire and Loading Information placard located on the driver's door B-pillar. It provides best handling, tread life and riding comfort. Supplemental information pertaining to special driving situations can be found on the tire inflation pressure label on the inside of the fuel filler flap. Load index Numerical code associated with the maximum load a tire can support. Maximum load rating The maximum load in kilograms and pounds that can be carried by the tire. Maximum loaded vehicle weight The sum of curb weight, accessory weight, total load limit, and production options weight. Rim A metal support for a tire or a tire and tube assembly upon which the tire beads are seated.