Carbon Racing Technology: BMW M GmbH manufactory produces a limited-edition high-performance sports car based on the BMW M3 Saloon – Innovative use of carbon-fibre reinforced plastic minimises weight – Weight-to-power ratio: 3.5 kilograms per horsepower.

Munich/Nürburg. BMW M GmbH will use the Grand Night event in the lead-upward to the Nürburgring 24-60 minutes race to unveil a spectacular new addition to its model range. The BMW M3 CRT (Carbon Racing Technology) embodies a concentrated blend of state-of-the-fine art development expertise – inspired directly by motor sport – in the areas of bulldoze system and chassis technology and intelligent lightweight design. Information technology also represents the worldwide debut of a new production procedure for carbon-fibre reinforced plastic (CFRP) components in the automotive industry.

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This process allows CFRP to exist introduced widely in the construction of the high-performance BMW M3 Saloon-based sports motorcar created by the BMW M GmbH factory. And that helps information technology achieve a weight-to-ability ratio of three.5 kilograms per horsepower. A V8 engine with customary M loftier-revving characteristics and maximum output of 331 kW/450 hp accelerates the BMW M3 CRT from 0 to 100 km/h in only iv.4 seconds.

The BMW M3 CRT will be produced by the BMW Yard GmbH factory in a limited run of 67 units. Following in the tyre tracks of the BMW M3 GTS – of which 135 examples were produced – this is the second small-series, high-functioning M3 off-shoot to exist bred for the race rail merely registered for the road. The exclusive character of the Saloon is emphasised by bespoke lightweight design components manufactured equally part of an innovative production procedure. The bonnet of the BMW M3 CRT and the bucket seats for the driver and front passenger are made from a cellular carbon honeycomb, which is produced in a globally unique process pioneered for the manufacture of body components for the BMW i3 and BMW i8 models.

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Innovative manufacturing procedure for lightweight CFRP components.

These new models – due to enter volume production in 2013 and equipped with innovative electrical and BMW ActiveHybrid drivesystem technology – will feature a torso consisting entirely of CFRPin the passenger cell area. In a new development, the production process introduced for this purpose enables the cuttings left behind in the structure of the body to be reprocessed. The basic textile (made up of carbon fibre thread) can now be woven into CFRP mats of whatsoever size before being impregnated with synthetic resin and hardened in a like way to the material used in the body of the BMW i3 and BMW i8. For the BMW M3 CRT this allows the creation of a bonnet made from two CFRP mouldings encasing an aramid honeycomb structure. This construction imbues the bonnet with the
strength of a conventional steel equivalent, merely at roughly a quarter of its weight. The weight saving over the aluminium bonnet of the standard BMW M3 Saloon is around 50 per cent.

The fabric produced through this innovative manufacturing technology is also used for the machine's bucket seats. Here, the CFRP layers are wrapped around a recycled-paper honeycomb, with a carbon layer fabricated using conventional product technology added to visible areas. CFRP is as well used to make both the rear spoiler of the BMW M3 CRT and an air-channelling element integrated into its front apron.

This innovative manufacturing process opens upwardly considerable potential for increased use of CFRP in series-produced cars every bit a means of lowering weight. The BMW Group is leading the way in this area of automotive construction, while BMW M GmbH can call on extensive racing expertise when it comes to intelligent lightweight design. The BMW M3 CRT is the latest in a fine tradition of highly exclusive loftier-performance sports cars optimised with the aid of lightweight design. This lineage stretches dorsum to the BMW 3.0 CSL of the 1970s and reached another high point in 2002 with the BMW M3 CSL. BMW K GmbH likewise bankrupt new basis with the use of CFRP in serial-produced vehicles; like the BMW M6 produced up to 2010, the current BMW M3 Coupé comes equally standard with a roof made from carbon-fibre reinforced plastic.

Significant weight reduction despite generous standard equipment.


The depression-weight construction of the BMW M3 CRT is enhanced past sound-proofing configured specially for the new variant and a sports exhaust organisation with an extremely lightweight titanium muffler. Also unique to the CRT are the two individual rear seats, which take their cues from the lateral support-enhancing contours of the forepart seats.
Included in the standard specification of the BMW M3 CRT are the Thousand double-clutch transmission with Drivelogic, Navigation system Professional person, BMW Individual High Terminate audio organization, a calorie-free, exterior mirror and luggage area package, an alert system and Park Altitude Control with sensors at the forepart and rear of the car. Despite this extremely generous choice of standard kit, its DIN unladen weight of 1,580 kg undercuts that of the standard BMW M3 Saloon by around 45 kg. When y'all accept into business relationship the equipment on board the weight saving is more like 70 kg. Added to which, cleverly reducing the load at the front of the car raises the proportion of the car'southward weight over the rear axle to 48.4 per cent, which has an extremely positive effect on agility.

High-revving V8 engine with extra power; M DCT Drivelogic.

Nether the CFRP bonnet of the BMW M3 CRT lies a variant of the V8 engine developed exclusively for the BMW M3 with further increased deportation, output and maximum torque. The high-revving unit provides the linear power commitment you wait from an 1000 machine and a highly responsive performance profile honed by the demands of the race runway. Tuned for the BMW M3 GTS, the eight-cylinder engine develops 331 kW/450 hp from its iv,360 cc deportation. Maximum output is reached at eight,300 rpm, and the driver will find meridian torque of 440 Newton metres on tap at 3,750 rpm. Helping to give the engine its intoxicating performance is wizardry derived directly from motor sport, including a bedplate crankcase structure in a special aluminium-silicon alloy, individual throttle butterflies, a knock command organisation with ion electric current engineering science and a dynamically-optimised wet sump oil supply.

Transferring the engine's power to the rear wheels is the M doubleclutch transmission with Drivelogic developed for the BMW M3. The vii-speed Chiliad DCT Drivelogic unit besides works co-ordinate to a principle adult in motor sport, allowing an uninterrupted flow of power through gear changes to evangelize extremely dynamic acceleration. Its shift characteristics have been tuned specially for the engine powering the BMW M3 CRT. Shift paddles on the steering wheel permit the driver to alter gear manually with optimum ergonomics. And a Launch Control office is on hand to generate maximum dispatch off the start line.

Special chassis construction with race-bred technology.

Expertise from race competition besides makes its presence felt in the chassis technology of the BMW M3 CRT. The BMW M3 Saloon'south front and rear axle construction has been enhanced past a rigid rear axle subframe and coilover suspension whose dampers are individually adaptable in their compression and rebound. The sixpiston, fixed-calliper high-performance brakes of the BMW M3 CRT boast a low-weight chemical compound structure. The vented brake discs measure 378 x 32 millimetres at the front end beam and 380 x 28 millimetres at the rear. The new M3 variant also uses Stahlflex restriction lines and model-specific condolement brake pads.

The specially tuned DSC (Dynamic Stability Control) organization – including ABS and M Dynamic Mode (MDM) – responds to both the greater dynamic potential of the BMW M3 CRT and its optimised beam load distribution. Meanwhile, the 245/35 R nineteen front end tyres and 265/35 R 19 rears (fitted on nineteen-inch M light-alloy wheels in Y-spoke design) ensure the engine's acceleration and braking ability is transferred to the route with maximum bear upon. The electronic engine direction of the BMW M3 CRT caps its top speed at 290 km/h.

The sectional Frozen Polar Silver metallic outside pigment shade in combination with Melbourne Red metal applications and special treatment for the BMW kidney grille likewise help to set the BMW M3 CRT autonomously from the standard M3. Within, the Saloon comes with besides sectional door sill strips, door panels and trim strips in aluminium grain structure. Completing the distinctive ambient inside the high-performance Saloon are the Alcantara-covered M steering wheel, which has an M Bulldoze button assuasive the driver to call upward his preferred prepare-up instantly, and special Sakhir Orange and Black bi-color covers for the front and private rear seats.

[Source: BMW ]