2011 Mercedes SLK-Class Owner's Manual - Page 219

171_AKB; 3; 60, en-US d2ureepe, 2009-05-11T16:00:23+02:00 - Seite 217 Version: 2.11.8.1 Tires and wheels Tire type code Tire type code ? may, at the option of the manufacturer, be used as a descriptive code for identifying significant characteristics of the tire. radio, and heater, to the extent that these items are available as factory-installed equipment (whether installed or not). 217 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), kilopascal (kPa), or bar. Date of manufacture The date of manufacture A identifies the week and year of manufacture. The first two figures identify the week, starting with "01" to represent the first full week of the calendar year. The second two figures represent the year. For example, "3208" represents the 32nd week of 2008. Aspect ratio Dimensional relationship between tire section height and section width expressed in percentage. Bar 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. Tire ply material 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 3 hours or driven no more than 1 mile (1.6 km). i For illustration purposes only. Actual data on tires are 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 ;. 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, 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. DOT (Department of Transportation) A tire branding symbol which denotes the tire meets requirements of the U.S. Department of Transportation. Z Operation