2007 Mercedes C-Class Owner's Manual - Page 305
2007 Mercedes C-Class Manual
Page 305 highlights
Operation Tires and wheels Tire ply material Tire and loading terminology Accessory weight The combined weight (in excess of those standard items which may be replaced) of automatic transmission, power steering, power brakes, power windows, power seats, radio, and heater, to the extent that these items are available as factory-installed equipment (whether installed or not). Air pressure The amount of air inside the tire pressing outward on each square inch of the tire. Air pressure is expressed in pounds per square inch (psi), or kilopascal (kPa) or bars. Aspect ratio Dimensional relationship between tire section height and section width expressed in percentage. Bar Another metric unit for air pressure. There are 14.5038 pounds per square inch (psi) to 1 bar; there are 100 kilopascals (kPa) to 1 bar. Bead The tire bead contains steel wires wrapped by steel cords that hold the tire onto the rim. Cold tire inflation pressure Tire inflation pressure when your vehicle has been sitting for at least three hours or driven no more than one mile (1.6 km). Curb weight The weight of a motor vehicle with standard equipment including the maximum capacity of fuel, oil, and coolant, and, if so equipped, air conditioning and additional optional equipment, but without passengers and cargo. 1 Plies in sidewall 2 Plies under tread i For illustration purposes only. Actual data on tires is specific to each vehicle and may vary from data shown in above illustration. This marking tells you about the type of cord and number of plies in the sidewall and under the tread. 304