S-class W202 Mercedes

1993-2000 of release

Repair and car operation

W202 Mercedes
+ 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
   12.7. Support
   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

b47c026d b47c026d

12.18. Wheels and tires

12.18.1. Technical characteristics


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.


As a result of continuous technical development by the probably admissible there can be other values of pressure of air in tires and other combinations the tire rim for older models. Therefore we recommend to request actual specifications in specialized repair shops.

Pressure of air in tires is specified also in a sticker on a cover of a fuel tank.

Producers recommend to use tires only to depth of a profile of 1,6 mm, on all surface of a protector depth of a profile should be not less than 1,6 mm. However replacement of summer tires is for safety reasons recommended at depth of a profile of 2 mm and winter tires at depth of a profile of 4 mm.

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
J= alphabetic reference of height and contour of onboard filling of a rim
x = designation of an one-piece rim with the deep basis
15= diameter of a rim in inches
Н2 = an external and internal profile of a rim with a ledge shoulder
ЕТ31 = depth of a press fitting of 31 mm.

Marking of tires


195= width of the tire in mm
/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.

If between data 14 and 89 there is a designation of N + to S, it indicates tires with a winter profile.

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.

160 km/h
180 km/h
190 km/h
210 km/h
240 km/h
270 km/h

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
CU = the reduced designation of the manufacturer of tires
12= size шиныUM8 = tire design
064= manufacturing date = 06th week 1994
= symbol of the current decade (1990-1999)
TUBELESS = the tubeless tire (TUBETYPE = the tire with the chamber).

The sizes of wheels and tires / pressure of air in tires
Model Size of tires
summer tires
Size of tires
winter tires M+S
Disk wheel (rim) Pressure of tires in a bar of Polovinnaya loading in front behind 2) c 4 passengers in front behind 2)
С180 С200 С250D 185/65R1588H
195/65R1591H 3)
185/65 R15 88T
195/65 R15 91T
6Jx15 H2 ET31
6,5Jx15 H2ET37 1)
205/60R1591H 205/60 R15 91T 7Jx15 H2 ET42
7Jx15 H2ET37 1)
195/65R1591H 3)
185/65 R15 88T
195/65 R15 91T
6Jx15 H2 ET31
6,5Jx15 H2ET37 1)
205/60R1591H 205/60 R15 91H 7Jx15 H2 ET42
7Jx15 H2ET37 1)
195/65R1591V 195/65 R15 91T 6Jx15 H2 ET31
6,5Jx15 H2ET37 1)
205/60R1591V 205/60 R15 91H 7Jx15 H2 ET42
7Jx15 H2ET37 1)

1) Disks from an easy material
2) Cars with the sports chassis: + 0,2 bar
3) Tires of this size are mounted only on a rim of 61/2Jx15H2 ET37