2008 MERCEDES-BENZ R350 Owner's Manual

528 Technical data
Engine
ModelR 550 4MATIC (251.172)1,2
1The quoted data apply only to the standard vehicle. See an authorized Mercedes-Benz Light Truck Center for
the corresponding data of all special bodies and special equipment.
2Canada only.
Engine273
Mode of operation4-stroke engine, gasoline injection
No. of cylinders8
Bore3.86 in (98.00 mm)
Stroke3.56 in (90.50 mm)
Total piston displacement333cuin (5461cm3)
Compression ratio10.7:1
Output acc. to SAE J 1349382 hp/6 000 rpm3
(285 kW/6 000 rpm)
3Premium fuel required. Performance may vary with fuel octane rating.
Maximum torque acc. to SAE J 1349391 lb-ft/2 800 - 4 800 rpm
(530 Nm/2 800 - 4 800 rpm)
Maximum engine speed6 500 rpm
Firing order1-5-4-2-6-3-7-8
Poly-V-belt2 404 mm

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.

533 Technical data
Electrical system
Electrical system
ModelR 3501
R 350 4MATIC
1USA only.
R 550 4MATIC2
2Canada only.
Generator (alternator)14 V/150 A14 V/180 A
Starter motor12 V/1.4 kW12 V/1.7 kW
Battery12 V/70 Ah12 V/95 Ah
Spark plugsBosch Y7MPP33NGK PLKR7A
Electrode gap0.031 in (0.8 mm)0.031 in (0.8 mm)
Tightening torque15 - 19 lb-ft (20 - 25 Nm)15 - 19 lb-ft (20 - 25 Nm)
ModelR 320 CDI 4MATIC
Generator (alternator)14 V/180 A
Starter motor12 V/2.0 kW
Battery12 V/95 Ah

534 Technical data
Main Dimensions
ModelR 320 CDI 4MATIC
R 3501
R 350 4MATIC
1USA only.
R 550 4MATIC2
2Canada only.
Overall vehicle length203.7 in (5 173 mm)203.7 in (5 173 mm)
Overall vehicle width (exterior mirrors folded out)85.4 in (2 168 mm)85.4 in (2 168 mm)
Overall vehicle width (exterior mirrors folded in)75.7 in (1 922 mm)75.7 in (1 922 mm)
Overall vehicle height3
3Data apply to unladen vehicles with standard equipment. Data may vary in vehicles equipped with AIRMATIC* depending on the
selected damping settings (page 276) and the current vehicle level (page 277).
65.5 in (1 663 mm)65.6 in (1 666 mm)
Wheelbase126.6 in (3 215 mm)126.6 in (3 215 mm)
Track, front64.7 in (1 643 mm)64.7 in (1 643 mm)
Track, rear64.4 in (1 636 mm)64.4 in (1 636 mm)
Ground clearance35.8 in (148 mm)5.9 in (150 mm)
Turning circle40.7 ft (12.4 m)40.7 ft (12.4 m)

535 Technical data
Weights
Weights
Roof load max.220 lb (100 kg)