Mercedes of the S-class W202
1993-2000 of release
Repair and operation of the car
+ 1.2. General information
+ 2. Maintenance
+ 3. Engines
+ 4. Lubrication system
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. System of ignition
+ 8. Fuel system
+ 9. Transmission
+ 10. Running gear
+ 11. Steering
- 12. Brake system
12.2. Anti-blocking system – ABS
12.3. The additional equipment – the ASR system
12.4. Specifications of the brake system
12.5. Overlays of front brake shoes
+ 12.6. Overlays of back disk brakes
12.8. Forward brake disk
12.9. Back brake disk
12:10. Brake fluid
12:11. Removal of air from the brake system
12:12. Brake pipelines / hoses
12:13. Replacement of brake highways
12:14. Brake shoes of the parking brake
12:15. Adjustment of the parking brake
12:16. Stoplight switch
12:17. Diagnostics of malfunctions of brakes
- 12:18. Wheels and tires
12.18.2. Service of wheels and tires
12.18.3. Diagnostics of malfunctions of tires
+ 13. Body
+ 14. Electric equipment
+ 14.2. Electrical circuitries
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The S-class Mercedes models, depending on the equipment, are equipped with tires and wheels of various sizes. The size, along with rim width, determines also press fitting depth. Depth of a press fitting represents the size from the middle of a rim to a wheel niche prileganiye surface to a brake disk.
All disk wheels have the pressed ledge which at very sharp driving on turns prevents the rim pressure upon the tubeless tire.
If tires and / or ободья which are not specified in the passport of the car are installed, it is necessary to bring them in the passport. For this purpose, as a rule, permission to their use from Mercedes is necessary.
All data on pressure of air are provided for cold tires. The increase in pressure resulting from long driving in tires on 0,2 bars should not be pitted.
Air pressure in the tire of a spare wheel corresponds to the maximum pressure at full loading.
Air pressure in tires is specified also in a sticker on a cover of the fuel tank.
As winter tires provide restriction of speed, the driver has to know the instructions concerning admissible highest speed.
Marking of disks
Example: 6 J x 15 H2 ET31:
6 = wheel rim width in inches
Marking of tires
/70 = height relation to width (height of cross section of the tire makes 70% of width)
If the specified ratios of cross section are absent (for example, 155R13), then in this case the "normal" ratio height/width takes place. It makes 82% for radial tires.
N = class of speed, N: to 210 km/h (for new tires it is specified not always).
R = a radial design (= the radial tire) 14 = diameter of a rim in inches
89 = an index of the bearing ability.
N = alphabetic reference of admissible highest speed.
Alphabetic reference of speed
Alphabetic reference of speed costs after designation of the size of the tire. Symbols of designation of speed belong both to summer, and to winter tires.
Date of production of tires
Date of production is specified on the tire in a code of the manufacturer.
Example: DOT CUL2 of UM8 064 TUBELESS
DOT = U.S. Department of Transportation
The sizes of wheels and tires/pressure of air in tires
1) Disks from light material