Technical characteristics of wheels (Mercedes-Benz C-Class W202)

Contents: Disc marking ↡ Tire markings ↡ Letter designation of speed ↡ Date of manufacture of tires ↡ Wheel and tire sizes/tire pressure ↡

Mercedes C-class models are equipped with tires and wheels of different sizes, depending on the equipment. The size, along with the rim width, also determines the pressing depth. The pressing depth is the dimension from the middle of the rim to the surface where the wheel well meets the brake disc.

All disc wheels have a pressed-in lip that prevents the rim from pressing on the tubeless tyre during very sharp cornering.

If tires and/or rims are installed that are not specified in the vehicle registration document, they must be entered in the registration document. This usually requires permission to use them from Mercedes.

All air pressure data is for cold tyres. The 0.2 bar increase in tyre pressure that occurs as a result of long-term driving should not be released.

The air pressure in the spare tire corresponds to the maximum pressure at full load.

Please note! Due to continuous technical development, other tire pressures and other tire-rim combinations may be acceptable for older models. We therefore recommend that you request up-to-date technical data from a specialist repair shop.

The air pressure in the tires is also indicated on the sticker on the fuel tank cap.

Attention! Manufacturers recommend using tires only up to a profile depth of 1.6 mm, on the entire tread surface the profile depth should be at least 1.6 mm. However, for safety reasons, it is recommended to replace summer tires at a profile depth of 2 mm and winter tires at a profile depth of 4 mm.

Since winter tires have a speed limit, the driver must be aware of the instructions regarding the maximum permissible speed.

Disc marking

Example: 6 J x 15 H2 ET31:

6 = wheel rim width in inches
J = letter designation of the height and contour of the rim filler
x = designation of a one-piece deep base rim
15 = rim diameter in inches
H2 = outer and inner rim profile with lug shoulder
ET31 = pressing depth 31 mm

Tire markings

Example:

195 = tire width in mm
/70 = height to width ratio (the height of the tire cross-section is 70% of the width)

If the specified cross-sectional ratios are not present (for example, 155R13), then in this case the "normal" height/width ratio takes place. It is 82% for radial tires.

H = speed class, H: up to 210 km/h (for new tires it is not always indicated).
R = radial construction (= radial tyre) 14 = rim diameter in inches
89 = load-bearing capacity index.
H = letter designation of the permissible maximum speed.

Attention! If there is a designation H + S between data 14 and 89, this indicates tires with a winter profile.

Letter designation of speed

The letter speed designation comes after the tire size designation. The speed designation symbols apply to both summer and winter tires.

Letter designation	Maximum permissible speed
Q	160 km/h
S	180 km/h
T	190 km/h
N	210 km/h
V	240 km/h
W	270 km/h

Date of manufacture of tires

The date of manufacture is indicated on the tire in the manufacturer's code.

Example: DOT CUL2 UM8 064 TUBELESS

DOT = US Department of Transportation
CU = abbreviated designation of the tire manufacturer
12 = tire sizeUM8 = tire construction
064 = production date = 06 week 1994
= symbol of the current decade (1990 - 1999.)
TUBELESS = tubeless tyre (TUBETYPE = tyre with tube).

Wheel and tire sizes/tire pressure

Model	Tire size summer tires	Tire size winter tires M+S	Disc wheel (rim)	Tyre pressure in bar Half load front rear²⁾		with 4 passengers in front and back²⁾
C180 C200 C250D	185/ 65R1588H 195/ 65R1591H³⁾	185/ 65 R15 88T 195/ 65 R15 91T	6Jx15 H2 ET31 6,5Jx15 H2ET37¹⁾	2,1	2,3	2,3	2,8
	205/ 60R1591H	205/ 60 R15 91T	7Jx15 H2 ET42 7Jx15 H2ET37¹⁾
C200D C220D	185/ 65R1588T 195/ 65R1591H³⁾	185/ 65 R15 88T 195/ 65 R15 91T	6Jx15 H2 ET31 6,5Jx15 H2ET37¹⁾	2,1	2,3	2,3	2,8
	205/ 60R1591H	205/ 60 R15 91H	7Jx15 H2 ET42 7Jx15 H2ET37¹⁾
C220 C280	195/ 65R1591V	195/ 65 R15 91T	6Jx15 H2 ET31 6,5Jx15 H2ET37¹⁾	2,1	2,3	2,3	2,8
	205/ 60R1591V	205/ 60 R15 91H	7Jx15 H2 ET42 7Jx15 H2ET37¹⁾