2006 Mercedes SL-Class Owner's Manual - Page 303
2006 Mercedes SL-Class Manual
Page 303 highlights
Operation Tires and wheels Rim diameter The rim diameter 4 ( page 301) is the diameter of the bead seat, not the diameter of the rim edge. Rim diameter is indicated in inches (in). Tire load rating The tire load rating 5 ( page 301) is a numerical code associated with the maximum load a tire can support. For example, a load rating of 91 corresponds to a maximum load of 1356 lbs (615 kg) the tire is designed to support. See also "Maximum tire load" ( page 306) where the maximum load associated with the load index is indicated in kilograms and lbs. Warning! For additional information on tire load rating, see "Load identification" ( page 304). G The tire load rating must always be at least half of the GAWR ( page 311) of your vehicle. Otherwise, tire failure may be the result which may cause an accident and/or serious personal injury to you or others. Always replace rims and tires with the same designation, manufacturer and type as shown on the original part. i Tire load rating 5 ( page 301) and tire speed rating 6 ( page 301) are also referred to as "service description". Warning! G Do not overload the tires by exceeding the specified load limit or vehicle capacity weight as indicated on the placard located on the driver's door B-pillar. Overloading the tires can overheat them, possibly causing a blowout. Overloading the tires can also result in handling or steering problems, or brake failure. 302