2007 MERCEDES-BENZ SLR CLASS torque

287 Operation
Tires and wheels
Rotating tires
Tire rotation can be performed on vehicles
with tires of the same dimension all
around. If your vehicle is equipped with
tires of the same dimension all around,
tires can be rotated, observing a
front-to-rear rotation pattern that will
maintain the intended rotation (spinning)
direction of the tire (
page 261).In some cases, such as when your vehicle
is equipped with mixed-size tires (different
tire dimension front vs. rear), tire rotation
is not possible.
If applicable to your vehicle’s tire configu-
ration, tires can be rotated according to
the tire manufacturer’s recommended in-
tervals in the tire manufacturer’s warranty
pamphlet located in your vehicle literature
portfolio. If none is available, tires should
be rotated every 3 000 to 6 000 miles
(5 000 to 10 000 km), or sooner if neces-
sary, according to the degree of tire wear.
The same rotation (spinning) direction
must be maintained (
page 261).
Rotate tires before the characteristic tire
wear pattern becomes visible (shoulder
wear on front tires and tread center wear
on rear tires).
Thoroughly clean the mounting face of
wheels and brake disks, i.e. the inner side
of the wheels/tires, during each rotation.
Check for and ensure proper tire inflation
pressure.For information on wheel change, see the
“Practical hints” section (
page 362).
!A wheel change should only be carried out
at an authorized Mercedes-Benz Center. Other-
wise there is a danger of damaging the vehicle by
jacking it up incorrectly.
Warning!G
Rotate front and rear wheels only if the tires
are of the same dimension.
If your vehicle is equipped with mixed-size
tires (different tire dimensions front vs.
rear), tire rotation is not possible.
Warning!G
Have the tightening torque checked after
changing a wheel. Wheels could become
loose if not tightened with a torque of
95 lb-ft (130 Nm).
Only use Genuine Mercedes-Benz wheel
bolts specified for your vehicle’s rims.

288 Operation
Tires and wheels
Anti-theft wheel nuts
Your vehicle is equipped with anti-theft
wheel nuts that prevent the theft of your
vehicle’s wheels.
1Anti-theft wheel nut
2Wheel nut keyRemoving anti-theft wheel nuts
Unscrew anti-theft wheel nut1 using
wheel nut key2.
Replace anti-theft wheel nut1 with
one of the regular wheel bolts.
Fasten the wheel bolt and tighten it
with a torque wrench to a tightening
torque of 95 lb-ft (130 Nm).Warning!G
Pull the parking brake lever up as many
notches as possible and move the gear se-
lector lever to park positionP, before loos-
ening the wheel bolts. Otherwise the vehicle
may move and cause an accident and/or
serious personal injury.
!Do not use air tools, such as an impact
wrench, when installing or removing the
anti-theft wheel nuts. An impact wrench can
damage the anti-theft wheel nuts and the wheel
nut key, or cause them to malfunction.
!Store wheel bolts and anti-theft wheel nuts
not currently in use in a safe place to avoid
damage to the threads.
Warning!G
The wheels could come loose if the wheel
bolts are not tightened to a torque of 95 lb-ft
(130 Nm). Have the tightening torque
checked after changing a wheel.

289 Operation
Tires and wheels
Fitting anti-theft wheel nuts
Unscrew a wheel bolt from one of the
wheels.
Replace that wheel bolt with one of the
anti-theft wheel nuts1 delivered with
your vehicle.
Fasten anti-theft wheel nut1 using
wheel nut key2 and tighten with a
torque wrench to a tightening torque of
95 lb-ft (130 Nm).
Warning!G
The wheels could come loose if the wheel
bolts are not tightened to a torque of 95 lb-ft
(130 Nm). Have the tightening torque
checked after changing a wheel.
iKeep the anti-theft wheel nut key in a conve-
nient place in your vehicle where you and service
personnel can always find it easily when it is
needed.
iIf you should lose the anti-theft wheel nut
key or one of the anti-theft wheel nuts, please
contact an authorized Mercedes-Benz Center for
a replacement.

380 Technical data
Engine
ModelMercedes-Benz SLR McLaren
(199.376)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 722 Edition
(199.376)1
Engine155155
Mode of operation4-stroke engine, gasoline injection4-stroke engine, gasoline injection
No. of cylinders88
Bore3.82 in (97.00 mm)3.82 in (97.00 mm)
Stroke3.60 in (92.00 mm)3.60 in (92.00 mm)
Total piston displacement331.8 cu in (5439 cm3)331.8 cu in (5439 cm3)
Compression ratio8.8:18.8:1
Output acc. to SAE J 1349617 hp/6500 rpm2
(460 kW/6500 rpm)
2Premium fuel required. Performance may vary with fuel octane rating.
641 hp/6500 rpm2
(478 kW/6500 rpm)
Maximum torque acc. to SAE J 1349575 lb-ft/3250-5000 rpm
(780 Nm/3250-5000 rpm)605 lb-ft/4000 rpm
(820 Nm/4000 rpm)
Maximum engine speed7000 rpm7000 rpm
Firing order1-5-4-2-6-3-7-81-5-4-2-6-3-7-8
Poly-V-belt2415 mm/1244 mm2415 mm/1244 mm

386 Technical data
Electrical system
Mercedes-Benz SLR McLarenMercedes-Benz SLR McLaren 722 Edition
Generator (alternator)14 V/150 A14 V/150 A
Starter motor12 V/1.7 kW12 V/1.7 kW
Battery
Starter battery12 V/35 Ah12 V/35 Ah
Battery for electrical consumers12 V/70 Ah12 V/70 Ah
Spark plugsNGK ILFR6ANGK ILFR6A
Electrode gap0.031 in (0.8 mm)0.031 in (0.8 mm)
Tightening torque18 – 22 lb-ft (25 – 30 Nm)18 – 22 lb-ft (25 – 30 Nm)

402 Technical terms
Power train
Collective term designating all compo-
nents used to generate and transmit
motive power to the drive axles,
including

engine

clutch/torque converter

transmission

transfer case

drive shaft

differential

axle shafts/axles
Production options weight
(
page 285)
Program mode selector switch
Used to switch the automatic trans-
mission between sport operation (S),
comfort operation (C) and manual
operation (MAN).
PSI
(P
ounds per square inch)
(
page 285)Recommended tire inflation pressure
(
page 285)
REST
(Residual Engine Heat Utilization)
Feature that uses the engine heat
stored in the coolant to heat the vehi-
cle interior for a short time after the
engine has been turned off.
Rim
(
page 285)
RON
(R
esearch Octane Number)
The Research Octane Number for gaso-
line as determined by a standardized
method. It is an indication of a gaso-
line’s ability to resist undesired detona-
tion (knocking). The average of both
the MON (Motor Octane Number) and
RON (Research Octane Number) is
posted at the pump, also known as
ANTI-KNOCK INDEX.Electro-hydraulic brake system
Electronically controlled hydraulic
braking system for increased braking
safety and comfort.
Shift lock
When the vehicle is parked, this lock
prevents the gear selector lever from
being inadvertently moved out of park
position P without SmartKey turned
and brake pedal depressed.
Sidewall
(page 285)
SRS
(S
upplemental Restraint System)
Seat belts, emergency tensioning de-
vice and air bags. Though independent
systems, they are closely interfaced to
provide effective occupant protection.

403 Technical terms
Tele Aid
(Tele
matic Alarm Identification on
Demand)
The Tele Aid system consists of three
types of response: automatic and
manual emergency, Roadside
Assistance and Information. Tele Aid is
initially activated by completing a
subscriber agreement and placing an
acquaintance call.
The Tele Aid system is operational
provided that the vehicle’s battery is
charged, properly connected, not dam-
aged and cellular and GPS coverage is
available.
Tightening torque
Force times lever arm (e.g. a lug
wrench) with which threaded fasteners
such as wheel bolts are tightened.TIN
(Tire Identification Number)
(
page 286)
Tire load rating
(
page 286)
Tire ply composition and material used
(
page 286)
Tire speed rating
(
page 286)
TIREFIT kit
Accessory for emergency and tempo-
rary tire repair. The TIREFIT kit consists
of a container with sealant material, a
filler hose and an air compressor.
Traction
(
page 286)Tread
(
page 286)
Treadwear indicators
(
page 286)
Uniform Tire Quality Grading Standards
(
page 286)
Vehicle capacity weight
(
page 286)
Vehicle maximum load on the tire
(
page 286)
VIN
(V
ehicle Identification Number)
The number set by the manufacturer
and placed on the body to uniquely
identify each vehicle produced.

419 Index
Rims and tires 381
Weights 388
Windshield and headlamp washer
system 390
Windshield washer system and head-
lamp cleaning system 397
Tele Aid 214, 403
Call priority 220
Emergency calls 215
Hands-free microphone 33
Information 218
Initiating an emergency call
manually 217
Messages in the multifunction
display 352
Remote door unlock 220
Roadside Assistance 217
SOS button 217
Stolen Vehicle Recovery
services 221
System self-check 215Telephone 209
Answering a call 142
Dialing 143
Ending a call 143
Hands-free microphone 33
Loading phone book 143
Messages in the multifunction
display 340
Operation 141, 162
Redialing 144
Signal strength 141
Storage location 207
Temperature
Interior temperature 191
Outside temperature 116
Sensor, Interior 33
Sensor, outside 116
Tether attachment points, see Children in
the vehicle
Tightening torque, Wheel bolts 287, 288,
403
Time 133
TIN 279, 286
Tire and Loading Information 262
Placard 262
Terminology 284Tire Identification Number see TIN
Tire inflation pressure
Checking
Checking electronically 269
Checking manually 269
TIREFIT kit 353, 362, 403
Tire inflation pressure 364
Using 362
Tires 258, 381
Air pressure 284
Care and maintenance 259
Cleaning 261
Direction of rotation, Spinning 261
Driving instructions 240
Hydroplaning 241
Important guidelines 258
Important notes, Tire inflation
pressure 268
Inflation pressure 249, 267, 268,
281
Information placards 262
Inspection 259
Load rating 274, 280, 286
Loading terminology 284