BMW M3 alternatives
Latest model: BMW M3 CRT 2012
The BMW M3 CRT (carbon Racing Technology) embodies a concentrated blend of state-of-the-art development expertise - inspired directly by motor sport - in the areas of drive system and chassis technology and intelligent lightweight layout. It also introduces the worldwide debut of a new production workflow for carbon-fibre reinforced plastic (CFRP) elements in the auto market. This workflow enables CFRP to be presented widely in the construction of the high-performance BMW M3 Saloon-based sports vehicle created by the BMW M Gmbh factory. And that helps it achieve a weight-to-power ratio of 3. 5 kilograms per horsepower. A V8 motor with customary M high-revving characteristics and maximum output of 331 Kw/450 hp accelerates the BMW M3 CRT from 0 to 100 km/h in just 4. 4 seconds.
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The BMW M3 CRT will be manufactured by the BMW M Gmbh factory in a limited run of 67 units. Following in the tyre tracks of the BMW M3 GTS - of which 135 examples were manufactured - this is the second small-series, high-performance BMW M3 off-shoot to be bred for the race track but registered for the road. The exclusive character of the Saloon is emphasised by bespoke lightweight layout elements produced as part of an high-tech production workflow. The bonnet of the BMW M3 CRT and the bucket seatings for the driver and front passenger are made from a cellular carbon honeycomb, which is manufactured in a globally original workflow pioneered for the manufacture of body elements for the BMW i3 and BMW i8 models.
These new models - thanks to enter volume production in 2013 and equipped with high-tech electric and BMW Activehybrid drive system technology - will option a body consisting completely of CFRP in the passenger cell space. In a new development, the production workflow presented for this purpose allows the cuttings left behind in the construction of the body to be reprocessed. The general fabric (made up of carbon fibre thread) can now be woven into CFRP mats of any size before being impregnated with synthetic resin and hardened in a alike way to the fabric used in the body of the BMW i3 and BMW i8. For the BMW M3 CRT this enables 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 traditional metal equivalent, but at roughly a quarter of its weight. The weight saving over the aluminium bonnet of the traditional BMW M3 Saloon is around 50 per cent.
The fabric manufactured via this high-tech manufacturing technology is also used for the car's bucket seatings. Here, the CFRP layers are wrapped around a recycled-paper honeycomb, with a carbon layer made using traditional production technology added to visible areas. CFRP is also used to make both the back spoiler of the BMW M3 CRT and an air-channelling element integrated into its front apron.