S-class W202 Mercedes
1993-2000 of release
Repair and car operation
+ 1.2. General information
+ 2. Maintenance
+ 3. Engines
+ 4. Greasing system
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. Ignition system
+ 8. Fuel system
+ 9. Transmission
+ 10. Running gear
+ 11. Steering
- 12. Brake system
12.2. Anti-blocking system – ABS
12.3. The additional equipment – ASR system
12.4. Specifications of brake system
12.5. Overlays of forward brake shoes
+ 12.6. Overlays of back disk brakes
12.8. Forward brake disk
12.9. Back brake disk
12.10. Brake liquid
12.11. Air removal from 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. Electroschemes
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The S-class Mercedes models, depending on the equipment, are equipped with tires and wheels of the various sizes. The size, along with width of a rim, defines also depth of a press fitting. Depth of a press fitting represents the size from the rim middle to a surface of a prileganiye of a niche of a wheel to a brake disk.
All disk wheels have the pressed ledge which at very sharp driving on turns prevents pressure of a rim upon the tubeless tire.
If tires and / or ободья which are not specified in the passport the car are established, it is necessary to bring them in the passport. For this purpose, as a rule, permission to their use from Mercedes firm is necessary.
All data on pressure of air are provided for cold tires. Increase of pressure resulting long driving in tires on 0,2 bar should not be pitted.
Pressure of air in the tire of a spare wheel corresponds to the maximum pressure at full loading.
Pressure of air in tires is specified also in a sticker on a cover of a fuel tank.
As winter tires provide restriction of speed, the driver should know the instructions concerning admissible highest speed.
Marking of disks
Example: 6 J x 15 Н2 ЕТ31:
6= width of a rim of a wheel in inches
Marking of tires
/70= the relation of height to width (the height of cross-section section of the tire makes 70 % from width)
If the specified ratios of cross-section section are absent (for example, 155R13), the "normal" ratio height/width in this case takes place. It makes for radial tires of 82 %.
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 bearing ability.
N = alphabetic reference of admissible highest speed.
Alphabetic reference of speed
The 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 manufacturing of tires
Date of manufacturing is specified on the tire in a code of the manufacturer.
Example: DOT CUL2 UM8 of 064 TUBELESS
DOT = ministry of transport of the USA
The sizes of wheels and tires / pressure of air in tires
1) Disks from an easy material