2010 Mercedes S-Class Owner's Manual - Page 428
2010 Mercedes S-Class Manual
Page 428 highlights
426 Tires and wheels Thoroughly clean the mounting face of wheels and brake disks, i.e. the inner side of the wheels/tires, during each rotation. Check for and ensure proper tire inflation pressure. For information on wheel change, see "Flat tire" (Y page 508). i For illustration purposes only. Actual data on tires are specific to each vehicle and may vary from data shown in above illustration. For more information, see "Rims and tires" (Y page 532). Tire size designation, load and speed rating Tire labeling Besides tire name (sales designation) and manufacturer name, a number of markings can be found on a tire. Following are some explanations for the markings on your vehicle's tires: Operation : Tire width ; Aspect ratio in % = Radial tire code ? Rim diameter A Load index B Speed symbol : Uniform Tire Quality Grading Standards (Y page 424) ; DOT, Tire Identification Number (Y page 429) = Maximum tire load (Y page 422) ? Maximum tire inflation pressure A B C D E (Y page 417) Manufacturer Tire ply material (Y page 430) Tire size designation, load and speed rating (Y page 426) Load identification (Y page 429) Tire name i For illustration purposes only. Actual data on tires are specific to each vehicle and may vary from data shown in above illustration. General: Depending on the design standards used, the tire size molded into the sidewall may have no letter or a letter preceding the tire size designation. No letter preceding the size designation (as illustrated above): Passenger car tire based on European design standards. Letter "P" preceding the size designation: Passenger car tire based on U.S. design standards. Letter "LT" preceding the size designation: Light Truck tire based on U.S. design standards.