rims MERCEDES-BENZ R320 2008 W251 User Guide

521 Technical data
Parts service
Warranty coverage
Identification labels
Layout of poly-V-belt drive
Engine
Rims and tires
Electrical system
Main Dimensions
Weights
Fuels, coolants, lubricants, etc.

529 Technical data
Rims and tires
Rims and tires
!Only use tires which have been tested and
approved by Mercedes-Benz. Tires approved by
Mercedes-Benz are developed to provide best
possible performance in conjunction with the
driving safety systems on your vehicle such as
ABS or ESP
®. Tires specially developed for your
vehicle and tested and approved by
Mercedes-Benz can be identified by finding the
following on the tire’s sidewall:

MO = Mercedes-Benz Original equipment
tires
Using tires other than those approved by
Mercedes-Benz may result in damage that is
not covered by the Mercedes-Benz Limited
Warranty.
!Using tires other than those approved by
Mercedes-Benz can have detrimental effects,
such as

poor handling characteristics

increased noise

increased fuel consumption
Moreover, tires and rims not approved by
Mercedes-Benz may, under load, exhibit dimen-
sional variations and different tire deformation
characteristics that could cause them to come
into contact with the vehicle body or axle parts.
Damage to the tires or the vehicle may be the
result.
iFurther information on tires and rims is
available at any authorized Mercedes-Benz Light
Truck Center. A placard with the recommended
tire inflation pressures is located on the driver’s
door B-pillar (
page 366). Some vehicles may
have supplemental tire inflation pressure infor-
mation for driving at high speeds (
page 372)
or for vehicle loads less than the maximum
loaded vehicle condition (
page 372). If such
information is provided, it can be found on the
placard located on the inside of the fuel filler
flap.The tire inflation pressure should be checked
regularly and should only be adjusted on cold
tires. Follow tire manufacturer’s maintenance
recommendation included with vehicle.
iThe following pages also list the approved
wheel rim and tire sizes for equipping your vehi-
cles with winter tires. Winter tires are not avail-
able as standard or optional factory equipment,
but can be purchased from an authorized
Mercedes-Benz Light Truck Center.
Depending on vehicle model and the standard or
optional factory-equipped wheel rim/tire
configuration on your vehicle (Appearance
Package, Sport Package etc.), equipping your
vehicle with winter tires approved for your
vehicle model may also require the purchase of
two or four wheel rims of the recommended size
for use with these winter tires. Contact an
authorized Mercedes-Benz Light Truck Center
for more information.

530 Technical data
Rims and tires
Same size tires
ModelR 320 CDI 4MATIC
R 3501
R 350 4MATIC
R 320 CDI 4MATIC (Sport Package*)
R 350 (Sport Package*)1
R 350 4MATIC (Sport Package*)
R 550 4MATIC2
R 550 4MATIC (Sport Package*)2
Rims (light alloy)8 J x 18 H28Jx19H2
Wheel offset2.64 in (67 mm)2.64 in (67 mm)
All-season tires3255/55 R18 105H M+S255/50 R19 107H XL (Extra Load) M+S
Winter tires3,4255/55 R18 105H M+S.255/50 R19 107H XL (Extra Load) M+S.
1USA only.2Canada only.3Radial-ply tires4Not available as factory equipment.

531 Technical data
Rims and tires
ModelR 320 CDI 4MATIC (Sport Package*)
R 350 (Sport Package*)1
R 350 4MATIC (Sport Package*)
R 550 4MATIC (Sport Package*)2
R 320 CDI 4MATIC*
R350*1
R350 4MATIC*
R550 4MATIC*2
AMG rims (light alloy)8.5Jx19H28.5Jx20H2
Wheel offset2.52 in (64 mm)2.36 in (60 mm)
All-season tires1255/50 R19 107H XL (Extra Load) M+S –
Summer tires3 –265/45 ZR20 104Y
Winter tires3,4255/50 R19 107H XL (Extra Load) M+S. –
1USA only.2Canada only.3Radial-ply tires4Not available as factory equipment.

532 Technical data
Rims and tires
Spare wheel
ModelR 320 CDI 4MATIC
R 3501
R 350 4MATIC
R 550 4MATIC2
1USA only.2Canada only.
Rim (steel)6.5 B x 18 H2
Wheel offset1.58 in (40 mm)
Collapsible tire3
3Must not be used with snow chains.
195/75-18 106P
Recommended tire inflation pressure44 psi (3.0 bar)
!Please compare the recommended tire
inflation pressure for your vehicle with the tire
inflation pressure on the yellow label located on
the spare wheel rim.
If the tire inflation pressure on the yellow label
on the spare wheel rim differs from the values
given in this Operator’s Manual, inflate the
collapsible tire to the recommended tire inflation
pressure given on the yellow label on the spare
wheel rim.iPlease note that the tire inflation pressure of
the collapsible tire differs from the tire inflation
pressure of the road tires.

560 Index
Replacing bulbs 480
Backup lamps 480, 481, 487
Brake lamps 480, 481, 487
Fog lamps, Front 480, 481, 483, 485
Fog lamp, Rear 480, 481, 487, 488
Headlamps 480, 481, 483
License plate lamps 480, 481, 487,
488
Low beam headlamps 480, 481, 483
Parking lamps 480, 481, 483, 485,
487, 488
Side marker lamps, Front 480, 487
Side marker lamps, Rear 480, 481,
487, 488
Standing lamps 480, 481, 483, 485,
487, 488
Tail lamps 480, 481, 487
Turn signal lamps 480, 481, 483,
485, 487
Reporting safety defects 18
Reset button, In instrument cluster 154Reset tool
Active head restraints,
Depository 478
Residual heat utilization 235
Restraint system
See Children in the vehicle
See SRS
See Infant and child restraint systems
Reverse gear position, Automatic
transmission 190, 194
Rims 395, 529
Roadside Assistance 12
Roadside Assistance button see Tele Aid*
Roller sunblinds, Panorama roof* 252
RON 540
Roof rack* 288
Rubber parts, Cleaning 410
Run Flat Indicator (Canada only) 374S
Safety
Driving safety systems 99
Occupant safety 70
Reporting safety defects 18
Safety belts see Seat belts
Satellite radio* 166
Scissors-type vehicle jack 470
Seat belt force limiter 85
Seat belt height adjustment 52
Seat belts 82
Children in the vehicle 87
Cleaning 411
Fastening 50
Height adjustment 52
Proper use of 52, 84
Safety guidelines 74
Telltale 29, 82, 420
Seat heating* see Seats 140
Seat ventilation* see Seats
Seating capacity 367

563 Index
Technical data 538
Air conditioning refrigerant 538
Brake fluid 537, 539
Coolant 537, 541
Dimensions, Vehicle 534
Electrical system 533
Engine 527
Engine oil 536, 538
Engine oil additives 538
Fuel requirements 540
Fuels, coolants, lubricants, etc. 536
Gasoline additives 540
Premium unleaded gasoline 539
Rims 529
Tires 529
Weights 535
Windshield washer and headlamp
cleaning* system 538, 544
Tele Aid* 322
Call priority 328
Emergency calls 323
Hands-free microphone 33
Information 326
Initiating an emergency call
manually 324Messages in the multifunction
display 461
Remote door unlock 328
Roadside Assistance 325
SOS button 324
Stolen Vehicle Recovery
services 329
System self-check 323
Telephone* 319
Answering a call 188
Changing mobile phone cradle 321
Dialing a number from the phone
book 188
Ending a call 188
Hands-free microphone 33
Inserting in cradle 320
Installing a different mobile phone
cradle 321
Messages in the multifunction
display 461
Operation 187
Phone book* 188
Redialing 189
Rejecting an incoming call 188
Removing from cradle 321Temperature
Coolant 164
Display mode, Status indicator 175
Interior temperature, setting see Cli-
mate control or Automatic climate
control (3-zone)*
Outside temperature 165
Sensor, Interior temperature 225
Sensor, Outside temperature 155
Tether attachment points
Children in the vehicle 87
3-zone automatic climate control* 222
Ticket holder 309
Tie-down rings 290
Tightening torque, Wheel bolts 501
Tilt/sliding panel* see Panorama roof with
power tilt/sliding panel*
Tilt/sliding sunroof* see Power tilt/sliding
sunroof*
Time 176
TIN 388, 395
Tire and Loading Information
Placard 367
Terminology 393
Tire Identification Number see TIN
Tire inflation pressure

564 Index
Checking 373
Checking manually 373
Checking tire pressure electronically,
Advanced Tire Pressure Monitoring
System (Advanced TPMS)*, (Canada
only) 379
Checking tire pressure electronically,
Tire Pressure Monitoring System
(TPMS), (USA only) 376
Recommended tire inflation
pressure 371
Tires 363, 529
Advanced Tire Pressure Monitoring
System (Advanced TPMS)*, (Canada
only) 379
Air pressure 393
Care and maintenance 364
Cleaning 365
Collapsible tire, Spare wheel 532
Combination low tire pressure/TPMS
malfunction telltale, USA only 27
Direction of rotation, Spinning 365
Driving instructions 343
Hydroplaning 344
Important guidelines 363
Important notes, Tire inflation pressure 372
Inflation pressure 371, 373
Inspection 364
Load rating 384, 385, 395
Loading terminology 393
Loading the vehicle 366
Low tire pressure telltale 422
Ply composition and material
used 396
Retreads 363
Rims and tires 529
Rotating 396
Run Flat Indicator (Canada only) 374
Service life 364
Sizes 529
Snow chains 399
Spare wheel, Collapsible tire 532
Speed rating 345, 386, 396
Storing 365
Temperature 372, 392
Terminology 393
TIN 388, 395
Tire Identification Number see TIN
Tire Pressure Monitoring System
(TPMS)*, (USA only) 376
Total load limit 396TPMS malfunction telltale (USA
only) 422
Traction 344, 392, 396
Tread depth 365, 398
Treadwear indicators 365
Vehicle maximum load on 396
Wear pattern 397
Winter tires 398
Tongue Weight Rating see TWR
Tools 467
Top tether
Children in the vehicle 87
Towing eye bolts 515
Towing the vehicle 513
Tow-starting 511, 513
TPMS (USA only) 376
Traction 396
ETS/4-ETS, Driving safety
systems 103
Transmission see Automatic transmission
Traveling abroad 348
Tread 396
Tread depth 365
Treadwear indicators 396
Trip computer 185
Trip odometer 155

566 Index
W
Warning indicators
Parktronic* 283
Warning lamps see Lamps, Indicator and
warning
Warning sounds
Distance warning function* 275
Distronic* (Canada only) 266
Exterior lamps 67
Parking brake 57
Parktronic system* 284
Seat belt telltale 85, 420, 421
Warranty coverage 10, 523
Washer fluid see Windshield washer fluid
Washer reservoir level 362
Washing the vehicle 403
Wear pattern, Tires 397
Weights, Vehicle 535
Wheel
Bolts 498
Change 492
Removing 497
Spare 532
Tightening torque 501Wheels
Sizes 529
Wheels, Tires and 363
Window curtain air bags 76
Windows see Power windows
Windshield
Cleaning 409
Defogging 216, 230
Infrared reflecting* 336
Washer fluid 544
Windshield washer fluid 362
Messages in the multifunction
display 461
Mixing ratio 544
Refilling 362
Reservoir level 362
Windshield washer system 362, 544
Windshield wipers 59
Cleaning wiper blades 409
Fast continuous wiping 60
Fast intermittent wiping 60
Rear window wiper/washer 61
Replacing wiper blades 489
Slow continuous wiping 60
Slow intermittent wiping 60Winter driving
Snow chains 399
Tires 398
Winter driving instructions 346
Winter tires 398
Wiping and washing simultaneously 62
Wood trims, cleaning 412