See also:

Tire labeling overview
The following markings are on the tire in addition to the tire name (sales designation) and the manufacturer's name: 1 Uniform tire Quality Grading Standard 2 DOT, Tire Identification Number ...

Tires
WARNING Do not drive with a flat tire. A flat tire affects the ability to steer or brake the vehicle. You may lose control of the vehicle. Continued driving with a flat tire will cause exce ...

Cleaning the steering wheel and gear or selector lever
  Thoroughly wipe with a damp cloth or use leather care agents that have been recommended and approved by Mercedes- Benz. ...