GENERAL INFORMATION
Introduction - F10
INTRODUCTION
1.1. THE NEW BMW 5 SERIES SALOON
The F10 5 Series was introduced in to the US market in March of 2010. The vehicle is available in 528i, 535i
and 550i models.
Fig. 1: Identifying BMW 5 Series Sedan
Courtesy of BMW OF NORTH AMERICA, INC.
1.1.1. Dimensions
Fig. 2: Identifying Exterior Dimensions Of BMW 5 Series Sedan
Courtesy of BMW OF NORTH AMERICA, INC.
INDEX EXPLANATION CHART
Index Explanation
a
Vehicle height, empty (1464 mm)
(1)
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COMPARISON OF F10 WITH E60
Weight and payload
Refer to the following table for the weight and payload of the F10 with automatic transmission according to the
German Standardization Institute (DIN).
WEIGHT AND PAYLOAD OF F10
1.1.2. Silhouette comparison
b Track width of basic wheels, front (1600 mm)
c Overhang, front (832 mm)
d Wheelbase(2968mm)
e Overhang, rear (1099 mm)
f Track width of basic wheels, rear (1627 mm)
g Vehicle length (4899 mm)
h Vehicle width without exterior mirrors (1860 mm)
(1)
With roof-mounted antenna: 1475 mm.
F10 E60
Vehicle height, empty [mm] 1464 1467
Track width, front [mm] 1600 1558
Overhang, front [mm] 832 856
Wheelbase [mm] 2968 2888
Overhang, rear [mm] 1099 1111
Track width, rear [mm] 1627 1582
Vehicle length [mm] 4899 4855
Vehicle width without exterior mirrors [mm] 1860 1846
Vehicle width over exterior mirrors [mm] 2094 2030
Turning circle (at vehicle curb weight) [m] 11.95 11.4
Shoulder room, front [mm] 1480 1455
Shoulder room, rear [mm] 1427 1454
Elbow room, front [mm] 1518 1485
Elbow room, rear [mm] 1485 1496
Maximum headroom, front (without slide/tilt sunroof) [mm] 1028 1028
Maximum headroom, front (with slide/tilt sunroof) [mm] 992 992
Maximum headroom, rear (without slide/tilt sunroof) [mm] 973 967
Maximum headroom, rear (with slide/tilt sunroof) [mm] 965 955
Luggage compartment capacity [liters] 520 520
Vehicle Vehicle curb weight (DIN) Payload
F10 528i 1730 kg/3814 lb 480 kg/1058 lb
F10 535i 1855 kg/4090 lb 480 kg/1058 lb
F10 550i 1985 kg/4376 lb 450 kg 992 lb
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F10
E60
Fig. 3: F10 Silhouette Comparison With BMW 5 Series Sedan E60
Courtesy of BMW OF NORTH AMERICA, INC.
F10
F01
E90
Fig. 4: F10 Silhouette Comparison With BMW 7 Series Sedan F01 And BMW 3 Series Sedan E90
Courtesy of BMW OF NORTH AMERICA, INC.
BODY
2.1. BODYSHELL
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Fig. 5: Identifying F10 Bodyshell (Body In White)
Courtesy of BMW OF NORTH AMERICA, INC.
2.1.1. Introduction
As with other models, the use of lightweight materials was a major requirement in the F10 design. This involves
the intelligent deployment of increased-strength multiphase steels and super high strength (press hardened)
steels. In the F10, the average strength of the body materials has increased by 55% compared to the E60.
The lightweight materials contribute significantly to the overall reduction in vehicle weight, and in combination
with the rigidity of the body structure.
The lightweight materials used on the F10 body structure contribute directly to its:
Driving Dynamics
Reduction of fuel consumption
Reduction of CO2 emissions
Passive safety
Weight saving features of the F10 bodyshell
Strut towers are made of die-cast aluminum
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High proportion of multiphase steels (20 % of the body skeleton weight)
High proportion of hot-formed steels (14 % of the body skeleton weight)
The die-cast aluminum strut towers reinforce the front section by ensuring the necessary rigidity that the
component design requires to withstand the loads. Compared to a conventional steel-shell structure, the more
compact design has significantly reduced the installation space and the weight in the front section. This
p rovides a more uniform axle-load distribution, among other benefits.
The increased-strength multiphase steels and super high strength hot-formed steels combine low weight with
maximum strength for the safety passenger cell, thus contributing significantly to passive safety.
For hot-formed steels, an innovative further development known as passive corrosion protection is used.
Previously, no suitable hot-formed sheet metal materials with cathodic corrosion protection had been available
on the market. With the development of press-hardening, a method is now available that enables mass
p roduction of galvanized hot-formed components. The components fabricated in this way can be used in the wet
area without corrosion of the base material. There is no need for additional corrosion protection measures for
this steel.
2.1.2. Materials
A modern vehicle body has to fulfill many different requirements. Despite small exterior dimensions, it is to
p rovide the largest possible passenger compartment. In the event of an accident, it must provide the passengers
with the best possible protection. All assemblies, such as the engine and transmission, are supported by the body
against the torque they generate. Futhermore, the body must have high static and, above all, dynamic rigidity to
guarantee the excellent driving characteristics typical of BMW vehicles.
In addition, the supporting structure of the vehicle must have high fatigue strength and be able to be repaired
with reasonable effort and cost in the event of an accident.
To fulfill all these requirements, BMW applies a manufacturing strategy that produces each part from the
material that is best suited for its function.
The two terms "aluminum" and "steel" are only the generic terms for the wide variety of alloys used in the
construction of the body.
These different allo y s have quite different properties.
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Fig. 6: Identifying F10 Material Qualities Of Bodyshell
Courtesy of BMW OF NORTH AMERICA, INC.
INDEX EXPLANATION CHART
Multiphase steels are steels with a structure that consists of multiple phases. Advanced-strength multiphase
steels with a yield strength R
p0.2
of 300 to 600 MPa include, for example, dual-phase steels and TRIP steels.
Advanced-strength multiphase steels with a yield strength R
p0.2
over 600 MPa include, for example, complex-
p hase steels and martensite-phase steels.
The hot-formed manganese-boron steels are ultra-high-strength steels with a yield strength
Rp0.
2 of over 900
MPa.
Weight proportions
The proportion of advanced-strength multiphase steels, super high strength hot-formed steels and aluminum is
increasing. These measures decrease the vehicle weight while still guaranteeing maximum strength of the
b od y shell.
Index Explanation
1 Multiphase steels (> 300 MPa)
2 Hot-formed steels (> 900 MPa)
3 Aluminum
4 Other steels (< 300 MPa)
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Fig. 7: Identifying F10 Bodyshell, Distribution Of Material Qualities
Courtesy of BMW OF NORTH AMERICA, INC.
INDEX EXPLANATION CHART
2.1.3. Corrosion protection and tightness
In order to optimize anti-corrosion protection, the body of the F10 is constructed primarily from galvanized
sheet metal and aluminum or aluminum sandwich sheet metals. Welding, adhesive bonding and riveting are the
assembly techniques used.
The overlaps of the panels are designed to minimize the joint surfaces, to prevent bondline corrosion. The
p enetration of water into the body structure is prevented in the design engineering of the vehicle by adhering
and sealing the joint surfaces.
In particularly critical areas, expanding foam parts are used to seal the body cavities against moisture. Doubled
up sheets in wet zones are double-sealed and, if necessar y , the y are also treated with wax to ensure a water ti g ht
Index Explanation
1 Multiphase steels (> 300 MPa), proportion 20%
2 Hot-formed steels (> 900 MPa), proportion 12%
3 Aluminum, proportion 2%
4 Other steels (< 300 MPa), proportion 66 %
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seal.
If necessary, the overlaps of the panels in dry zones are sealed to prevent dust from getting inside.
Corrosion-critical material pairing is avoided. The combinations of material substrates and joining methods
were chosen with meticulous care in order to avoid corrosion risks.
Coating process
In the painting process, the bodyshell is dipped and:
Alkaline-cleaned
Phosphated (roughening the surface for better adhesion)
Cathodic-dip coated (anticorrosion coating that coats the insides of all body cavities).
The organic paint coat is then baked on.
Furthermore, the body is sealed with PVC and protected by filler, topcoat and clear coat paints on the outer
skin.
Critical parts of the body of the F10 are specially treated with cavity preservation sealant.
The objectives are:
Three years without any visible corrosion whatsoever
Twelve years without rust penetration
High level of protection against water and dust intrusion.
2.1.4. Front section
Regarding the repair of the F10 front section, compared to the F01, there are no major changes.
As on previous vehicles, bod y struts are used to increase the ri g idit y of the front section.
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Fig. 8: Identifying F10 Front Body Section
Courtesy of BMW OF NORTH AMERICA, INC.
INDEX EXPLANATION CHART
2.1.5. Side frame
Index Explanation
1 Rear right strut
2 Rear left strut
3 Front left strut
4 Front right strut
NOTE: When installing and dismantling the struts, it is mandatory to observe the repair
instructions!
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Fig. 9: Identifying F10 Separation Points On Side Frame
Courtesy of BMW OF NORTH AMERICA, INC.
When performing a body repair, the separation points listed above should be used where possible.
Fig. 10: Identifying F10 Spare Part Sections
Courtesy of BMW OF NORTH AMERICA, INC.
The rear side panel is welded to the bodyshell at the factory. However, if it needs to be replaced in the field, the
rear side panel is to be bonded and riveted.
2.1.6. Roof
The roof is welded to the bodyshell at the factory. However, if it needs to be replaced in the field, the roof is to
be bonded and riveted.
2.1.7. Rear Section
Re g ardin g the repair of the F10 rear section, compared to the F01, there are no ma j or chan g es.
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