2008 Mercedes S-Class Owner's Manual - Page 571
2008 Mercedes S-Class Manual
Page 571 highlights
Operation Tires and wheels For additional information on tire load rating, see "Load identification" ( page 571). page 568) and tire speed rating 6 ( page 568) are also referred to as "service description". page 568) and tire speed rating 6 ( page 568) are also referred to as "service description". i Tire load rating 5 ( i Tire load rating 5 ( Summer tires Index Q R S T H V W Y (Y) ZR Speed rating up to 100 mph (160 km/h) up to 106 mph (170 km/h) up to 112 mph (180 km/h) up to 118 mph (190 km/h) up to 130 mph (210 km/h) up to 149 mph (240 km/h) up to 168 mph (270 km/h) up to 186 mph (300 km/h) above 186 mph (300 km/h) above 149 mph (240 km/h) At the tire manufacturer's option, any tire with a speed capability above 149 mph (240 km/h) can include a "ZR" in the size designation (for example: 245/40 ZR18). To determine the maximum speed capability of the tire, the service description for the tire must be referred to. The service description is comprised of the tire load rating 5 ( page 568) and the tire speed rating 6 ( page 568). If your tire includes "ZR" in the size designation and no service description 5 and 6 ( page 568) is given, the tire manufacturer must be consulted for the maximum speed capability. If a service description 5 and 6 ( page 568) is given, the speed capability is limited by the speed symbol in the service description. Example: 245/40 ZR18 97Y. In this example, "97Y" is the service description. The letter "Y" designates the speed rating and the speed capability of the tire is limited to 186 mph (300 km/h). Tire speed rating The tire speed rating 6 ( page 568) indicates the approved maximum speed for the tire. Warning! G Even when permitted by law, never operate a vehicle at speeds greater than the maximum speed rating of the tires. Exceeding the maximum speed for which tires are rated can lead to sudden tire failure, causing loss of vehicle control and possibly resulting in an accident and/or personal injury and possible death, for you and for others. 570
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