2009 MERCEDES-BENZ SLR technical data

382 Technical dataIdentification labels1Vehicle certification label with Vehicle
Identification Number
2Product option code plate with paint
number
The vehicle certification plate with the Ve-
hicle Identification Number and the vehicle
identification plate (certification plate)
with the paint number are located on the
A-pillar on the driver’s side.
The Vehicle Identification Number is locat-
ed on the driver’s side in the bottom corner
of the windshield.3Vehicle Identification Number
4Emission control information label,
includes both federal and California
certification exhaust emission
standards
Engine number
The engine number is engraved on the un-
derside of the engine and can only be read
after removing the casing on the bottom of
the engine.
There is also a plate on the left-hand side
of the engine cover.i
When ordering parts, please specify vehicle
identification and engine numbers.

383 Technical data
Layout of poly-V-belt drive
Layout of poly-V-belt drive
The SLR has two poly-V-belts (belt one
shown in purple/belt two shown in black).1Idler pulley
2Automatic belt tensioner
3Power steering pump
4Air conditioning compressor
5Idler pulley
6Crankshaft
7Coolant pump
8Generator (alternator)
9Idler pulley
aAutomatic belt tensioner
bSupercharger

384 Technical dataEngineModel
Mercedes-Benz SLR McLaren
Roadster (199.476)
1
1The quoted data apply only to the standard vehicle. See an authorized Mercedes-Benz Center for the corresponding data of all special bodies and special equipment.
Mercedes-Benz SLR McLaren
Roadster 722 S (199.476)
1
Engine
155
155
Mode of operation
4-stroke engine, gasoline injection
4-stroke engine, gasoline injection
No. of cylinders
8
8
Bore
3.82 in (97.00 mm)
3.82 in (97.00 mm)
Stroke
3.60 in (92.00 mm)
3.60 in (92.00 mm)
Total piston displacement
331.8 cu in (5439 cm
3)
331.8 cu in (5439 cm
3)
Compression ratio
8.8:1
8.8:1
Output acc. to SAE J 1349
617 hp/6500 rpm
2
(460 kW/6500 rpm)
2Premium fuel required. Performance may vary with fuel octane rating.
641 hp/6500 rpm
2
(478 kW/6500 rpm)
Maximum torque acc. to SAE J 1349
575 lb-ft/3250-5000 rpm
(780 Nm/3250-5000 rpm)
605 lb-ft/4000 rpm
(820 Nm/4000 rpm)
Maximum engine speed
7000 rpm
7000 rpm
Firing order
1-5-4-2-6-3-7-8
1-5-4-2-6-3-7-8
Poly-V-belt
2415 mm/1244 mm
2415 mm/1244 mm

385 Technical data
Rims and tires
Rims and tires
!
For safety reasons, only use tires and rims
which have been tested and approved by
Mercedes-Benz for use on SLR vehicles. Tires
approved by Mercedes-Benz are developed to
provide best possible performance in conjunc-
tion with the driving safety systems on your
vehicle such as ABS or ESP
®.
!
Using tires and rims other than those ap-
proved 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.
This may result in damage to the tires or the
vehicle.
i
Further information on tires and rims is
available at any authorized Mercedes-Benz Cen-
ter. A placard with the recommended tire infla-
tion pressures is located on the driver’s door
B-pillar. Some vehicles may have supplemental
tire pressure information for driving at high
speeds (
page 269) or for vehicle loads less
than the maximum loaded vehicle condition. If
such information is provided, it can be found on
the placard located on the inside of the fuel filler
flap. The tire pressure should be checked regu-
larly and should only be adjusted on cold tires.
Follow tire manufacturer’s maintenance
recommendation included with vehicle.

386 Technical dataRims and tiresMixed size tires
Only Mercedes-Benz SLR McLaren Roadster:
Turbine-style
10-spoke-style*
Front axle:Rims (light alloy)
9 J x 19
9 J x 18
Wheel offset
1.83 in (46.5 mm)
1.77 in (45 mm)
Summer tires (radial-ply tires)
255/35 ZR19 (96Y) XL
1
245/40 ZR18 (93Y)
Rear axle:Rims (light alloy)
11
1/2 J x 19
11
1/2 J x 18
Wheel offset
1.73 in (44 mm)
1.73 in (44 mm)
Summer tires (radial-ply tires)
295/30 ZR19 (100Y) XL
1
295/35 ZR18 (99Y)
1
1Must not be used with snow chains.!
Only use Michelin tires of the sizes and
types noted above. They are the only tires
approved for use on the Mercedes-Benz SLR
McLaren Roadster. Use of tires not specially ap-
proved for the Mercedes-Benz SLR McLaren
Roadster could result in unanticipated perfor-
mance characteristics. For more information,
contact an authorized Mercedes-Benz Center.

387 Technical data
Rims and tires
Only Mercedes-Benz SLR McLaren Roadster 722 S:
Multi-spoke rims in forged aluminum
Front axle:Rims (light alloy)
9 J x 19
Wheel offset
1.83 in (46.5 mm)
Summer tires (radial-ply tires)
255/35 ZR19 (96Y) XL
1
1Must not be used with snow chains.Rear axle:Rims (light alloy)
11
1/2 J x 19
Wheel offset
1.73 in (44 mm)
Summer tires (radial-ply tires)
295/30 ZR19 (100Y) XL
1
!
Only use Michelin tires of the sizes and
types noted above. They are the only tires
approved for use on the Mercedes-Benz SLR
McLaren Roadster 722 S. Use of tires not spe-
cially approved for the Mercedes-Benz SLR
McLaren Roadster 722 S could result in
unanticipated performance characteristics. For
more information, contact an authorized
Mercedes-Benz Center.

388 Technical dataRims and tiresWinter tires*
Only Mercedes-Benz SLR McLaren Roadster:
Turbine-style
10-spoke-style*
Front axle:Rims (light alloy)
9 J x 19
9 J x 18
Wheel offset
1.83 in (46.5 mm)
1.77 in (45 mm)
Summer tires (radial-ply tires)
255/35 R19 (96V) M+S.
245/40 R18 (97V) M+S.XL
Rear axle:Rims (light alloy)
9 J x 19
9 J x 18
Wheel offset
1.83 in (46.5 mm)
1.77 in (45 mm)
Summer tires (radial-ply tires)
255/35 R19 (96V) M+S.
245/40 R18 (97V) M+S.XL
!
Only use Michelin or Dunlop tires of the siz-
es and types noted above. They are the only tires
approved for use on the SLR. Use of tires not
specially approved for the SLR could result in
unanticipated performance characteristics. For
more information, contact an authorized
Mercedes-Benz Center.

389 Technical data
Rims and tires
Only Mercedes-Benz SLR McLaren Roadster 722 S:
Turbine-style
Front axle:Rims (light alloy)
9 J x 19
Wheel offset
1.83 in (46.5 mm)
Tires (radial-ply tires)
255/35 R19 96V XL M+S.
Rear axle:Rims (light alloy)
9 J x 19
Wheel offset
1.83 in (46.5 mm)
Tires (radial-ply tires)
255/35 R19 96V XL M+S.
!
Only use Dunlop tires of the sizes and types
noted above. They are the only tires approved for
use on the Mercedes-Benz SLR McLaren Road-
ster 722 S. Use of tires not specially approved
for the Mercedes-Benz SLR McLaren Roadster
722 S could result in unanticipated performance
characteristics. For more information, contact
an authorized Mercedes-Benz Center.