Mercedes-benz 2013 E Class Coupe User Manual download pdf (Page 392)

calculated by dividing the tire width by the tire

height.

Tire code: tire code = specifies the tire type.

"R" represents radial tires; "D" represents

diagonal tires; "B" represents diagonal radial

tires.

Optionally, tires with a maximum speed of

over 149 mph (240 km/h) may have "ZR" in

the size description, depending on the

manufacturer (e.g. 245/40 ZR 18).

Rim diameter: rim diameter ? is the

diameter of the bead seat, not the diameter

of the rim flange. The rim diameter is

specified in inches (in).

Load-bearing index: load-bearing index A

is a numerical code that specifies the

maximum load-bearing capacity of a tire.

Do not overload the tires by exceeding the

specified load limit. The maximum

permissible load can be found on the

vehicle's Tire and Loading Information

placard on the B-pillar on the driver's side

(Y page 383).

Example:

Load-bearing index 91 indicates a maximum

load of 1356 lb (615 kg) that the tires can

bear. For further information on the maximum

tire load in kilograms and lbs, see

(Y page 391).

For further information on the load bearing

index, see "Load index" (Y page 391).

Speed rating: speed rating B specifies the

approved maximum speed of the tire.

i

Tire data is vehicle-specific and may

deviate from the data in the example.

Regardless of the speed rating, always

observe the speed limits. Drive carefully and

adapt your driving style to the traffic

conditions.

Summer tires

Index Speed rating

Q up to 100 mph (160 km/h)

R up to 106 mph (170 km/h)

Index Speed rating

S up to 112 mph (180 km/h)

T up to 118 mph (190 km/h)

H up to 130 mph (210 km/h)

V up to 149 mph (240 km/h)

W up to 168 mph (270 km/h)

Y up to 186 mph (300 km/h)

ZR...Y up to 186 mph (300 km/h)

ZR...(..Y) over 186 mph (300 km/h)

ZR over 149 mph (240 km/h)

R

Optionally, tires with a maximum speed of

over 149 mph (240 km/h) may have "ZR"

in the size description, depending on the

manufacturer (e.g. 245/40 ZR18).

The service specification is made up of

load-bearing index A and speed rating

B.

R

If the size description of your tire includes

"ZR" and there are no service

specifications, ask the tire manufacturer in

order to find out the maximum speed.

If a service specification is available, the

maximum speed is limited according to the

speed rating in the service specification.

Example: 245/40 ZR18 97 Y. In this

example, "97 Y" is the service specification.

The letter "Y" represents the speed rating.

The maximum speed of the tire is limited to

186 mph (300 km/h).

R

The size description for all tires with

maximum speeds of over 186 mph

(300 km/h) must include "ZR", and the

service specification must be given in

parentheses. Example:

275/40 ZR 18 (99 Y). Speed rating "(Y)"

indicates that the maximum speed of the

tire is over 186 mph (300 km/h). Ask the

tire manufacturer about the maximum

speed.

390

All about wheels and tires

Wheels and tires

1 2 ... 387 388 389 390 391 392 393 394 395 396 397 ... 431 432

Comments to this Manuals

No comments