See also:

Snow chains
For safety reasons, Mercedes-Benz recommends that you only use snow chains that have been specially approved for your vehicle by Mercedes-Benz, or are of a corresponding standard of quality. ...

Kilopascal (kPa)
Metric unit for tire pressure. 6.9 kPa is the equivalent of 1 psi. Another unit for tire pressure is bar. There are 100 kilopascals (kPa) to 1 bar. ...

Tire size designation, load-bearing capacity and speed rating
1 Tire width 2 Nominal aspect ratio in % 3 Tire code 4 Rim diameter 5 Load bearing index 6 Speed rating Tire data is vehicle-specific and may deviate from the data in the example. Ge ...