2007 MERCEDES-BENZ GL320CDI wheel size

447 Practical hints
What to do if …
Warning!G
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recom-
mended by the vehicle manufacturer on the
Tire and Loading Information placard on the
driver’s door B-Pillar or, if available, the tire
inflation pressure label on the fuel filler flap.
If your vehicle has tires of a different size
than the size indicated on the Tire and
Loading Information placard or, if available,
the tire inflation pressure label, you should
determine the proper tire inflation pressure
for those tires.
As an added safety feature, your vehicle has
been equipped with a tire pressure monitor-
ing system (TPMS) that illuminates a low tire
pressure telltale when one or more of your
tires is significantly underinflated. Accord-
ingly, when the low tire pressure telltale illu-
minates, you should stop and check your
tires as soon as possible, and inflate them to
the proper pressure. Driving on a significant-
ly underinflated tire causes the tire to
overheat and can lead to tire failure.
Underinflation also reduces fuel efficiency
and tire tread life, and may affect the vehi-
cle’s handling and stopping ability. Please
note that the TPMS is not a substitute for
proper tire maintenance, and it is the driv-
er’s responsibility to maintain correct tire
pressure, even if underinflation has not
reached the level to trigger illumination of
the TPMS low tire pressure telltale.
USA only:
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate
when the system is not operating properly.
The TPMS malfunction indicator is com-
bined with the low tire pressure telltale.
When the system detects a malfunction, the
telltale will flash for approximately 1 minute
and then remain continuously illuminated.
This sequence will continue upon subse-
quent vehicle start-ups as long as the
malfunction exists. When the malfunction
indicator is illuminated, the system may not
be able to detect or signal low tire pressure
as intended.TPMS malfunctions may occur for a variety
of reasons, including the installation of in-
compatible replacement or alternate tires or
wheels on the vehicle that prevent the TPMS
from functioning properly. Always check the
TPMS malfunction telltale after replacing
one or more tires or wheels on your vehicle
to ensure that the replacement or alternate
tires and wheels allow the TPMS to continue
to function properly.

524 Practical hints
Flat tire
Mounting the spare wheel
Preparing the vehicle
Prepare the vehicle as described
(
page 523).
Take the wheel wrench, the collapsible
wheel chock, and the vehicle jack out
of the cargo compartment
(
page 495).
Take the Minispare wheel out of the
cargo compartment (
page 499).Lifting the vehicle
Prevent the vehicle from rolling away
by blocking wheels with wheel chocks
or other sizeable objects.
One collapsible wheel chock is includ-
ed with the vehicle tool kit
(
page 495). For information on set-
ting up the collapsible wheel chock,
see (
page 498).
When changing wheel on a level surface:
Place one wheel chock in front of and
another sizeable object behind the
wheel that is diagonally opposite to the
wheel being changed.
Always try lifting the vehicle using the jack
on a level surface. However, should
circumstances require you to do so on a
hill, place the wheel chock and another
sizeable object as follows:
Place the wheel chock and another
sizeable object on the downhill side
blocking both wheels of the axle not
being worked on.
!Vehicles with factory-mounted
running-boards*:
Your vehicle is equipped with a scissors-type
jack (located under the cargo compartment
floor) designed for use with factory-mounted
running boards. Only use this jack when jacking
up vehicles with factory-mounted running boards
as otherwise the vehicle’s underbody can be
damaged. See separate instructions for
scissors-type jack.
Warning!G
The jack is designed exclusively for jacking
up the vehicle at the jack take-up brackets
built into both sides of the vehicle. To help
avoid personal injury, use the jack only to lift
the vehicle during a wheel change. Never
get beneath the vehicle while it is supported
by the jack. Keep hands and feet away from
the area under the lifted vehicle. Always
firmly set parking brake and block wheels
before raising vehicle with jack.
Do not disengage parking brake while the
vehicle is raised. Be certain that the jack is
always vertical (plumb line) when in use,
especially on hills. Always try to use the jack
on level surface. Make sure that the jack
arm is fully seated in the jack take-up brack-
et. Always lower the vehicle onto sufficient
capacity jackstands before working under
the vehicle.

528 Practical hints
Flat tire
Lowering the vehicle
Lower vehicle by turning crank coun-
terclockwise until vehicle is resting ful-
ly on its own weight.
Remove the jack.
1-5Wheel bolts
Tighten the five wheel bolts evenly, fol-
lowing the diagonal sequence illustrat-
ed (1 to 5), until all bolts are tight.
Observe a tightening torque of
110 lb-ft (150 Nm).
Store jack and all other vehicle tool kit
items back into the storage well.
Warning!G
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
110 lb-ft (150 Nm).
iThe removed road wheel cannot be stored in
the spare wheel well under the cargo compart-
ment floor, but should be transported in the car-
go compartment wrapped in a protective cover.
Vehicles with TPMS or Advanced TPMS*:
Do not activate the tire inflation pressure moni-
tor until a full size wheel/tire with functioning
sensor has been placed back into service on the
vehicle.

554 Technical data
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 pressure is located on the driver’s
door B-pillar (
page 550). Some vehicles may
have supplemental tire inflation pressure infor-
mation for driving at high speeds (
page 395)
or for vehicle loads less than the maximum
loaded vehicle condition (
page 395). 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
vehicles with winter tires. Winter tires are not
available as standard or optional factory equip-
ment, 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, etc.), equipping your vehicle with win-
ter 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. See an authorized Mercedes-Benz
Light Truck Center for more information.

555 Technical data
Rims and tires
Same size tires
ModelGL 320 CDI,
GL 450GL 320 CDI*,
GL 450*GL 320 CDI*,
GL 450*
Rims (light alloy)8J x 18 H28.5 J x 19 H28.5 J x 20 H2
Wheel offset2.36 in (53 mm)2.20 in (56 mm)2.20 in (56 mm)
Summer tires1 --275/50 R20 109W
All-season tires1
1Radial-ply tires
265/60 R18 110H M+S275/55 R19 111H M+S-
Winter tires1,2
2Not available as factory equipment.
265/60 R18 110H M+S.265/55 R19 109H M+S .-
All-terrain tires*1,2265/60 R18 110H M+S275/55 R19 111H M+S-

590 Index
Important notes, Tire inflation
pressure 395
Inflation pressure 378, 394, 396
Information placard 389
Inspection 386
Load rating 406, 407, 417
Loading Information 389
Loading terminology 415
Loading the vehicle 388
Low tire pressure telltale, Canada
only 27, 446
Maximum load 418
Messages in the
multifunction display 446
Ply composition and material
used 418
Problems under-/overinflation 405
Retreads 385
Rims and tires 554
Rotating 388
Run Flat Indicator (Canada only) 397
Service life 386
Sizes 406
Snow chains 421
Spare wheel 499, 524
Speed rating 354, 408, 418Storing 387
Temperature 395, 414
Terminology 415
TIN 410, 417
Tire Identification Number see TIN
Tire Pressure Monitoring System
(TPMS), (USA only) 399
TPMS malfunction telltale 446
Traction 354, 414, 418
Tread 418
Tread depth 387, 420
Treadwear indicators 418
Vehicle maximum load on 418
Wear pattern 419
Winter tires 420
Tongue Weight Rating see TWR
Tools 495
Top tether
Children in the vehicle 99
Towing
Trailer 200, 366, 369
Towing eye bolt 542
Towing the vehicle 542, 543
Tow-starting 538, 540Traction 414, 418
4-ETS, Driving safety systems 103,
109
Trailer
Attaching 368
Checking weights 367
Electrical connections 366
Hitch* 366
Loading 367
Towing 366, 369
Weights and ratings 366
Transfer case 203
LOW RANGE mode* 203
Switching LOW RANGE mode* 204
Transmission gear selector lever see Gear
selector lever
Transmission position indicator 157
Transmission positions 195
Transmission see Automatic transmission
Traveling abroad 372
Tread 418
Tread depth 387, 420
Treadwear indicators 418
Trip computer 187
Trip odometer, resetting 156

592 Index
Vehicle status message memory
menu 169
Vehicle tool kit 495
Vehicle washing 427
VIN 551
Voice control system*
Button on multifunction steering
wheel 30, 158
Hands-free microphone 34
W
Warning indicators
Parktronic* 292
Warning lamps see Lamps, Indicator and
warning
Warning sounds
Distance warning function* 274
Distronic* 265
Exterior lamps 145
Parking brake 61
Parktronic* 294
Seat belt telltale 88Warranty coverage 10, 549
Washer fluid see Windshield washer fluid
Washer reservoir level 567
Washing the vehicle 425
Wear pattern, Tires 419
Weights, Vehicle 559
Wheel
Bolts 496
Change 524
Removing 526
Spare 499, 524
Tightening torque 528
Wheel, Tires and 385
Wheels
Sizes 555
Window curtain air bags 80
Windows see Power windows
Windows, cleaning 431
Windshield
Cleaning 431
Cleaning wiper blades 431
Cleaning, Windshield washer fluid 65
Defogging 224, 238
Infrared reflecting* 345
Washer fluid 384, 561, 567Windshield washer fluid
Messages in the
multifunction display 487
Mixing ratio 567
Refilling 384
Reservoir level 384
Wiping with 65
Windshield washer system 384, 567
Windshield wipers 63
Cleaning wiper blades 431
Fast continuous wiping 64
Fast intermittent wiping 64
Rear window wiper/washer 65
Replacing wiper blades 520
Slow continuous wiping 64
Slow intermittent wiping 64
Winter driving 420
Snow chains 421
Tires 420
Winter driving instructions 355
Winter tires 420
Wood trims, cleaning 434