MERCEDES-BENZ SLR CLASS 2005 Owners Manual

370 Technical dataRims and tiresMixed size tires
Turbine-style
10-spoke-style*
5-spoke-style*
Front axle:Rims (light alloy)
9J x 19
9J x 18
9J x 18
Wheel offset
1.83 in (46.5 mm)
1.77 in (45 mm)
1.77 in (45 mm)
Summer tires (radial-ply tires)
255/35 ZR19 (96Y) XL
1
245/40 ZR18 (93Y)
245/40 ZR18 (93Y)
Rear axle:Rims (light alloy)
11
1/2 J x 19
11
1/2 J x 18
11
1/2 J x 18
Wheel offset
1.77 in (45 mm)
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.
295/35 ZR18 (99Y)
1
!Only use Michelin tires of the sizes 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 per-
formance characteristics. For more in-
formation, contact an authorized
Mercedes-Benz Center.

371 Technical data
Rims and tires
Winter tires*Front axle:Rims (light alloy)
9J x 18
Wheel offset
1.77 in (45 mm)
Tires (radial-ply tires)
245/40 R18 97V XL M+S
Rear axle:Rims (light alloy)
9J x 18
Wheel offset
1.77 in (45 mm)
Tires (radial-ply tires)
245/40 R18 97V XL M+S
!Only use Michelin tires of the sizes 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 per-
formance characteristics. For more in-
formation, contact an authorized
Mercedes-Benz Center.

372 Technical dataElectrical systemGenerator (alternator)
14 V/150 A
Starter motor
12 V/1.7 kW
BatteryStarter battery
12 V/35 Ah
Battery for electrical consumers
12 V/70 Ah
Spark plugs
NGK ILFR6A
Electrode gap
0.031 in (0.8 mm)
Tightening torque
18 – 22 lb-ft (25 – 30 Nm)

373 Technical data
Main dimensions
Main dimensions
Overall vehicle length
183.3 in (4656 mm)
Overall vehicle width
75.1 in (1908 mm)
Overall vehicle width (doors open - widest point)
111.7 in (2838 mm)
Overall vehicle height
49.6 in (1261 mm)
Overall vehicle height (doors open)
80.5 in (2045 mm)
Wheelbase
106.3 in (2700 mm)
Track, front
64.5 in (1638 mm)
Track, rear
61.8 in (1569 mm)

374 Technical dataWeightsTrunk load max.
220 lbs (100 kg)

375 Technical data
Fuels, coolants, lubricants, etc.
Fuels, coolants, lubricants, etc.
CapacitiesVehicle components and their respective
lubricants must match. Therefore use only
products tested and approved by
Mercedes-Benz. Please refer to the Factory Approved
Service Products pamphlet, or inquire at
your Mercedes-Benz Center.
Capacity
Fuels, coolants, lubricants, etc.
Engine with oil filter
9.5 US qt (9.0 l)
Approved engine oils
Automatic transmission
9.1 US qt (8.6 l)
MB Automatic Transmission Fluid
Rear axle
1.9 US qt (1.8 l)
Hypoid gear oil SAE 75 W 85
Power steering
approximately 1.15 US qt (1.1 l)
MB Power Steering Fluid (Pentosin CHF 11S)
Front wheel hubs
approximately 3.0 oz (85 g) each
High temperature roller bearing grease
Brake system
1.6 US qt (1.5 l)
MB Brake Fluid (DOT 4+)

376 Technical dataFuels, coolants, lubricants, etc.
Capacity
Fuels, coolants, lubricants, etc.
Cooling system
approximately 10.6 US qt (10.0 l)
MB 325.0 Anticorrosion/Antifreeze
Low temperature cooling system
approximately 5.3 US qt (5.0 l)
MB 325.0 Anticorrosion/Antifreeze
Fuel tank
including a reserve of
25.6 US gal (97.0 l)
3.2 US gal (12.0 l)
Premium unleaded gasoline:
Minimum Posted Octane 91
(Avg. of 96 RON/86 MON)
Air conditioning system
R-134a refrigerant and special PAG lubricant
oil (never R-12)
Windshield washer and headlamp cleaning system
7.4 US qt (7 l)
MB Windshield Washer Concentrate
1
1Use MB Windshield Washer Concentrate “S” and water for temperatures above freezing or MB Windshield Washer Concentrate “S” and commercially available pre-
mixed windshield washer solvent/antifreeze for temperatures below freezing. Follow suggested mixing ratios (page 381).

377 Technical data
Fuels, coolants, lubricants, etc.
Engine oils
Engine oils are specifically tested for their
suitability in our engines and durability for
our service intervals. Therefore, only use
approved engine oils and oil filters
required for vehicles with Maintenance
System. For a listing of approved engine
oils and oil filters, refer to the Factory
Approved Service Products pamphlet, or
contact an authorized Mercedes-Benz
Center.
Using engine oils and oil filters of
specification other than those expressly
required for the Maintenance System, or
changing of oil and oil filter at change
intervals longer than those called for by
the Maintenance System will result in en-
gine damage not covered by the
Mercedes-Benz Limited Warranty.Please follow Maintenance System recom-
mendations for scheduled oil changes.
Failure to do so will result in engine dam-
age not covered by the Mercedes-Benz
Limited Warranty.
Engine oil additives
Do not blend oil additives with engine oil.
They may damage the engine.
Damage or malfunctions resulting from
blending oil additives are not covered by
the Mercedes-Benz Limited Warranty.Air conditioner refrigerant
R-134a (HFC) refrigerant and special PAG
lubricating oil are used in the air condition-
er system.
Never use R-12 (CFC) or mineral-based lu-
bricating oil. Otherwise damage to the
system will occur.

378 Technical dataFuels, coolants, lubricants, etc.Brake fluid
During vehicle operation, the boiling point
of the brake fluid is continuously reduced
through the absorption of moisture from
the atmosphere. Under extremely strenu-
ous operating conditions, this moisture
content can lead to the formation of bub-
bles in the system, thus reducing the sys-
tem’s efficiency.
Therefore, the brake fluid must be re-
placed every two years, preferably in the
spring.
Only brake fluid approved by
Mercedes-Benz is recommended. Your au-
thorized Mercedes-Benz Center will pro-
vide you with additional information.
Premium unleaded gasoline
Fuel requirements
Only use premium unleaded fuel:

The octane number (posted at the
pump) must be 91 min. It is an average
of both the Research (R) octane num-
ber and the Motor (M) octane number:
(R+M)/2). This is also known as the
ANTI-KNOCK INDEX.
Unleaded gasoline containing oxygenates
such as ethanol, IPA, IBA and TBA can be
used provided the ratio of any one of these
oxygenates to gasoline does not exceed
10%; MTBE must not exceed 15%.
The ratio of methanol to gasoline must not
exceed 3% plus additional cosolvents.
!To maintain the engine’s durability and
performance, premium unleaded gaso-
line must be used. If premium unleaded
is not available and low octane fuel is
used, follow these precautions:

have the fuel tank only partially
filled with unleaded regular and fill
up with premium unleaded as soon
as possible


avoid full throttle driving and abrupt
acceleration


do not exceed an engine speed of
3000 rpm if the vehicle is loaded
with a light load such as two per-
sons and no luggage


do not exceed
2/3 of maximum ac-
celerator pedal position if the vehi-
cle is fully loaded or operating in
mountainous terrain

379 Technical data
Fuels, coolants, lubricants, etc.
Using mixtures of ethanol and methanol is
not allowed. Gasohol, which contains
10% ethanol and 90% unleaded gasoline,
can be used.
These blends must also meet all other fuel
requirements, such as resistance to spark
knock, boiling range, vapor pressure, etc.
Gasoline additives
A major concern among engine
manufacturers is carbon build-up caused
by gasoline. Mercedes-Benz recommends
only the use of quality gasoline containing
additives that prevent the build up of
carbon deposits.
After an extended period of using fuels
without such additives, carbon deposits
can build up especially on the intake valves
and in the combustion area, leading to
engine performance problems such as:

Warm-up hesitation


Unstable idle


Knocking/pinging


Misfire


Power lossIn areas where carbon deposits may be
encountered due to lack of availability of
gasolines which contain these additives,
Mercedes-Benz recommends the use of
additives approved by us for use on
Mercedes-Benz vehicles. Refer to Factory
Approved Service Products pamphlet for a
listing of approved product(s). Follow
directions on product label.
Do not blend any specific fuel additives
with fuel. This only results in unnecessary
cost and may be harmful to engine
operation.
Damage or malfunction resulting from
poor fuel quality or from blending
additional fuel additives other than those
tested and approved by us for use on
Mercedes-Benz vehicles listed in the
Factory Approved Service Products
pamphlet are not covered by the
Mercedes-Benz Limited Warranty.