Mercedes S-class W202

1993-2000 of release

Repair and car operation

12.18.1. Technical characteristics

THE GENERAL DATA

Models Mercedes of the S-class, depending on the equipment, are equipped by tyres and wheels of the various sizes. The size, along with width of a rim, defines also depth запрессовки. Depth запрессовки represents the size from the middle of a rim to a surface прилегания wheel niches to a brake disk.

All disk wheels have запрессованный a ledge which at very sharp driving on turns prevents pressure of a rim on бескамерную the tyre.

If tyres and / or ободья which are not specified in the passport in the car are established, it is necessary to bring them in the passport. For this purpose, as a rule, the permission to their use from firm Mercedes is necessary.

All data on pressure of air is resulted for cold tyres. Increase of pressure resulting to long driving in tyres on 0,2 bar should not be pitted.

Pressure of air in the tyre of a spare wheel corresponds to the maximum pressure at full loading.

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The prevention

As a result of continuous technical development other values of pressure of air in tyres and other combinations the tyre-rim for older models can be probably admissible. Therefore we recommend to request actual specifications in specialised repair shops.

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Pressure of air in tyres is specified also in a label on a cover of a fuel tank.

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The prevention

Manufacturers recommend to use tyres 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 tyres for safety reasons is recommended at depth of a profile of 2 mm and winter tyres at depth of a profile of 4 mm.

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As winter tyres provide restriction of speed the driver should know the instructions, concerning admissible highest speed.

Marks of disks

Example: 6 J х 15 Н2 ЕТ31:

6 = width of a rim of a wheel in inches
J = a letter designation of height and a contour of onboard refuelling of a rim
х = a 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 запрессовки 31 mm.

Marks of tyres

Example:

195 = width of the tyre in mm
/70 = the relation of height to width (the height of cross-section section of the tyre makes 70 % from width)
If the specified parities of cross-section section are absent (for example, 155R13) "the normal" parity height / in this case takes place width. It makes for radial tyres of 82 %.
Н = a class of speed, Н: to 210 km/hour (for new tyres it is underlined not always).
R = a radial design (= the radial tyre) 14 = diameter of a rim in inches
89 = an index of bearing ability.
Н = a letter designation of admissible highest speed.

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The prevention

If between the data 14 and 89 there is designation Н + S it specifies in tyres with a winter profile.

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Letter designation of speed

The letter designation of speed costs after a designation of the size of the tyre. Symbols of a designation of speed concern both to summer, and winter tyres.

LETTER DESIGNATION	ADMISSIBLE HIGHEST SPEED
Q	160 km/hour
S	180 km/hour
Т	190 km/hour
Н	210 km/hour
V	240 km/hour
W	270 km/hour

Date of manufacturing of tyres

Manufacturing date is specified on the tyre in a code of the manufacturer.

Example: DOT CUL2 UM8 064 TUBELESS

DOT = the ministry of transport of the USA
CU = the reduced designation of the manufacturer of tyres
12 = the size шиныUM8 = a tyre design
064 = manufacturing date = 06 week 1994
= Symbol of current decade (1990 - 1999)
TUBELESS = бескамерная the tyre (TUBETYPE = the tyre with the chamber).

The sizes of wheels and tyres / pressure of air in tyres

Model	The size of tyres Summer tyres	The size of tyres Winter tyres M+S	Disk wheel (rim)	Pressure of tyres in a bar of Polovinnaja loading in front behind 2)		c 4-mja 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)	2,1	2,3	2,3	2,8
	205/60R1591H	205/60 R15 91T	7Jx15 H2 ET42 7Jx15 H2ET37 1)
C200D C220D	185/65R1588T 195/65R1591H 3)	185/65 R15 88T 195/65 R15 91T	6Jx15 H2 ET31 6,5Jx15 H2ET37 1)	2,1	2,3	2,3	2,8
	205/60R1591H	205/60 R15 91H	7Jx15 H2 ET42 7Jx15 H2ET37 1)
C220 C280	195/65R1591V	195/65 R15 91T	6Jx15 H2 ET31 6,5Jx15 H2ET37 1)	2,1	2,3	2,3	2,8
	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⁾ Tyres of the given size are mounted only on a rim 61/2Jx15H2 ET37