(from AC Schnitzer
Press Release) Tension rises for the 6-series from 630i to M6:
The AC Schnitzer TENSION Street Version
The IAA 2005 saw the much-observed premiere of the Concept Car AC
based on BMW M6. The positive reception together with huge demand
for this unique
vehicle persuaded us to include in our range a road-going version,
limited to 50 examples,
for conversion from the 630i - M6 model. After just 11 months of
development and testing,
we now present: the AC Schnitzer
TENSION Street Version
Naturally the "small brother" could not be a 1 : 1 copy of the
Concept Car, as the TENSION
is a technology showcase which demonstrates what is technically
feasible. In contrast, the
TENSION Street Version had to incorporate suitability for everyday
use with no loss of
driving pleasure or reliability.
The focal point of the development work was adaptation of the
breathtaking, costly aerodynamic
conversion for series production.
The bonnet of the AC Schnitzer TENSION, restyled from the standard
6-series, is used on the
Street Version. It reveals at first glance, from its large air
outlet edged in a chrome frame, that
the ventilation of the power plant is actively supported by
sufficient cooling air flow.
The front skirt of the TENSION technology showcase has been
completely adapted. It makes the
TENSION Street Version look much lower and at the same time improves
downforce on the
front axle at high speeds. The air intake provides additional
cooling for the engine and the
front brakes and also gives the TENSION Street Version its
unmistakeable facial expression.
To provide sufficient ventilation for the power plant, the new front
wing has integral air outlet
openings which with their three chrome ribs and the indicators are
reminiscent of a shark's
Adequate air exchange is essential not only in the front of the
vehicle in order to develop its full
potential. The same principle applies to the rear.
Consequently, in the TENSION Street Version too air ducts for the
rear brakes have been
worked into the striking side skirts. The side skirts which give the
vehicle its elongated
appearance form the smooth transition to the rear, which on the
TENSION Street Version in
comparison with the Concept Car is still very sporting but slightly
The rear skirt houses not just the solid stainless steel twin
exhaust system with chromed
Sports Trim tailpipes but also a carbon diffuser.
Another highlight at the rear of the TENSION Street Version is the
boot lid which was originally
reserved for the TENSION. But its modified styling gives the rear of
the BMW 6-series the
"Finishing Touch", so the new boot lid is now a firm part of the
Street Version conversion.
The bodystyling of the TENSION Street Version is completed by the AC
mirrors and the extravagant two-colour paintwork in Alpine White in
Anthracite Metallic. Naturally other paint options are available on
What does a costly aerodynamic conversion look like without the
right wheel and tyre
combination? We think it's incomplete. So we decided to equip the
TENSION Street Version with
the latest AC Schnitzer wheel generation: the forged alloy Type V.
Appearance is one thing, but much more important in this context is
the safety aspect. To take
this into account, and secondly to meet the high technical demands
placed on the AC Schnitzer
wheel by our engineers, a complete new wheel development was
The result is the Type V alloy forged wheel with bi-colour finish.
It has a partly polished,
partly painted surface. This wheel type, available for all 5 and
6-series, achieves a fundamental
paradox: reduction in weight with simultaneously maximum wheel
diameter and width.
The TENSION Street Version is fitted with rims size 9.0J x 20" on
the front and 10.0J x 20" on
the rear, and each front wheel weighs in at just approx. 10.8 kg.
The tyres to fit the wheels are
size 245/35 ZR 20 on the front and 285/30 ZR 20 on the rear.
In conjunction with the wheel and tyre combination, a sports
suspension has been developed for
the TENSION Street Version which lowers the vehicle by around 25 -
30 mm and perceptibly
improves driving dynamics. For the M6, a suspension spring kit is
To counter lateral roll, AC Schnitzer antiroll bar sets are fitted
to the front and rear axles.
Another suspension highlight is our in-house spring strut brace of
aluminium which superbly
prevents distortion in the vehicle front.
Depending on base vehicle, the TENSION Street Version can be fitted
optionally with the new
AC Schnitzer 5.1 l engine. This is available in principle for all
BMW 6-series with N62 B44 or
N62 B48 TU engines.
The new engine offers a true alternative to the M5 or M6. As this
conversion is also available
for vehicles with automatic transmission, fans of automatics can now
enjoy the higher power
in conjunction with the pleasures of an automatic.
Whereas the basic engine gives maximum torques of 450 or 490 Nm, the
AC Schnitzer 5.1 l
engine achieves 550 Nm. Naturally the performance has been
optimised. It rises from 245 kW
(333 HP) or 270 kW (367 HP) to a superb 302 kW (411 HP). At the same
performance is enhanced. The top speed rises on average by around 35
These excellent figures are obtained by the use of specially
developed engine components.
Individually, these are:
AC Schnitzer special cylinder block AC Schnitzer special cylinder
AC Schnitzer special pistons AC Schnitzer special conrods
AC Schnitzer special crankshaft AC Schnitzer exhaust manifold
AC Schnitzer special catalyst AC Schnitzer Control Unit Program
AC Schnitzer sports rear silencer with
chromed Sports Trim tailpipes
To achieve excellent deceleration figures, the AC Schnitzer high
performance brake system
from the TENSION has been modified. At the front axle, an 8-pot
fixed caliper with perforated,
vented brake discs and special pads ensures braking with ruthless
efficiency. However, this kit
is reserved for the Street Versions based on BMW M6.
Only the interior remains, and this too has been modified in typical
AC Schnitzer fashion: Starting
with the carbon interior trim in titanium via the 3-spoke airbag
sports steering wheel in
leather with carbon applications, the automatic selector lever in
carbon, the new combiinstrument
with a speed display up to 320 or 330 km/h, through to velours mats
and boot with red embroidered logo: this all gives the
characteristic look to the interior of theTENSION Street Version. The overall impression is completed with
silver or black anodized
aluminium accessories comprising pedal set, foot rests, handbrake
handle and cover for the
controller of the "i-Drive" systems.
Last but not least, the silver serial number on the black anodized
aluminium placard on the
centre console permanently reminds the driver that he is sitting in
a very special car: e.g. TENSION Street Version no. 1/50.
The AC Schnitzer TENSION Street Version is available in various
levels. The conversion
work is performed exclusively by AC Schnitzer in Aachen. The only
exceptions are the USA
and Japan, where trained specialists perform the vehicle conversion