2009 MERCEDES-BENZ SLR Owner's Manual

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.

390 Technical dataElectrical system
Mercedes-Benz SLR McLaren
Roadster
Mercedes-Benz SLR McLaren
Roadster 722 S
Generator (alternator)
14 V/150 A
14 V/150 A
Starter motor
12 V/1.7 kW
12 V/1.7 kW
Battery
Starter battery
12 V/35 Ah
12 V/35 Ah
Battery for electrical consumers
12 V/70 Ah
12 V/70 Ah
Spark plugs
NGK ILFR6A
NGK ILFR6A
Electrode gap
0.031 in (0.8 mm)
0.031 in (0.8 mm)
Tightening torque
18 – 22 lb-ft (25 – 30 Nm)
18 – 22 lb-ft (25 – 30 Nm)

391 Technical data
Main dimensions
Main dimensions
Mercedes-Benz SLR McLaren Roadster
Mercedes-Benz SLR McLaren Roadster 722 S
Overall vehicle length
183.3 in (4656 mm)
183.3 in (4656 mm)
Overall vehicle width
75.1 in (1908 mm)
75.1 in (1908 mm)
Overall vehicle width
(doors open - widest point)
111.7 in (2838 mm)
111.7 in (2838 mm)
Overall vehicle height
50.4 in (1281 mm)
50.0 in (1271 mm)
Overall vehicle height
(doors open - highest point)
80.5 in (2045 mm)
80.1 in (2035 mm)
Overall vehicle height
(soft top open - highest point)
63.0 in (1599 mm)
62.6 in (1589 mm)
Wheelbase
106.3 in (2700 mm)
106.3 in (2700 mm)
Track, front
64.5 in (1638 mm)
64.5 in (1638 mm)
Track, rear
61.8 in (1569 mm)
61.8 in (1569 mm)

392 Technical dataWeights
Mercedes-Benz SLR McLaren Roadster
Mercedes-Benz SLR McLaren Roadster 722 S
Trunk load max.
165lb (75kg)
165 lb (75 kg)