2011 Mercedes R-Class Owner's Manual - Page 343
2011 Mercedes R-Class Manual
Page 343 highlights
Definitions for tires and loading Wheel rim The part of the wheel on which the tire is mounted. identification plate on the B-pillar on the driver's side. 341 Maximum weight of the laden vehicle GAWR (Gross Axle Weight Rating) The GAWR is the maximum gross axle weight rating. The actual load on an axle must never exceed the gross axle weight rating. The gross axle weight rating can be found on the vehicle identification plate on the B-pillar on the driver's side. The maximum weight is the sum of the unladen weight of the vehicle, the weight of the accessories, the maximum load and the weight of the optional equipment installed at the factory. Kilopascal (kPa) Metric unit for tire pressure. 6.9 kPa is the equivalent of 1 psi. Another unit for tire pressure is bar. 100 kilopascal (kPa) is the equivalent of 1 bar. Speed index The speed index is part of the tire identification. Specifies the speed range for which the tire is approved. Load index GTW (Gross Trailer Weight) The GTW is the weight of a trailer including the weight of the load, luggage, accessories etc. on the trailer. In addition to the load bearing index, the load index may also be imprinted on the sidewall of the tire. This specifies the load bearing capacity more precisely. GVW (Gross Vehicle Weight) The gross vehicle weight includes the weight of the vehicle including fuel, tools, the spare wheel, accessories installed, occupants, luggage and the drawbar noseweight if applicable. The gross vehicle weight must not exceed the gross vehicle weight rating GVWR as specified on the vehicle identification plate on the B-pillar on the driver's side. Unladen weight The weight of a vehicle with standard equipment including the maximum capacity of fuel, oil and coolant. It also includes the airconditioning system and optional equipment if these are installed on the vehicle, but does not include passengers or luggage. Maximum tire load The maximum tire load in kilograms or pounds is the maximum weight for which a tire is approved. GVWR (Gross Vehicle Weight Rating) The GVWR is the maximum permissible gross weight of a fully loaded vehicle (the weight of the vehicle including all accessories, occupants, fuel, luggage and the drawbar noseweight if applicable). The gross vehicle weight rating is specified on the vehicle Maximum permissible tire pressure Maximum permissible tire pressure for one tire. Z Tires and wheels