Well, if this is true, guess the
all new F90 M5 will have too much torque to continue using Getrag DCT, will use ZF's automatic instead.....
http://www.autocar.co.uk/car-news/ne...ur-wheel-drive
Quote:
March 10, 2017
The BMW M5 will turn 32 years of rear-wheel-drive performance car tradition on its head this year with the introduction of the brand's first four-wheel-drive on the model.
The German super-saloon is set to run a reworked version of the outgoing fifth-generation model’s twin-turbocharged V8 petrol engine, producing upwards of 592bhp [600hp], along with a standard eight-speed automatic gearbox.
The four-wheel-drive model is described by senior BMW officials as not only the most powerful and fastest accelerating but also the most dynamically capable and technically advanced M5 yet.
BMW senior vice-president Hildegard Wortmann told Autocar last month that the model will be as significant as the latest 7 Series in defining the next generation of performance models.
Wortmann explained that in the same way that the 7 Series has set the agenda for upcoming driverless technology, the new M5 will represent the next generation of M-branded cars.
“You will see in this car where we will take the [M] brand from here,” she said. “I’ve driven it on track and it’s really special. The engineers have done an excellent job. It’s outrageous.”
Following an illustrious line of rear-wheel-drive-only predecessors, the new M5 is scheduled to make its world debut at the Frankfurt motor show in September before going on sale in the UK at a price expected to eclipse the £73,985 of the outgoing M5.
The newest member of M division’s line-up will challenge the recently introduced 603bhp twin-turbocharged 4.0-litre V8-powered Mercedes-AMG E63 S 4Matic and the successor to today’s 560bhp twin-turbocharged 4.0-litre V8-powered Audi RS6, which is planned for introduction next year.
The starting point for the sixth-generation M5 is the latest 5 Series, which is codenamed G30. The new M5 will feature a re-engineered body structure with a number of weight-saving initiatives, including greater use of aluminium and hot-formed high-strength steel as well as carbonfibre for the roof and bootlid. The new M5 is claimed to weigh close to the 1870kg of its predecessor despite a moderate increase in its exterior dimensions and the inclusion of the four-wheel drive hardware.
The new body structure was leaked on the internet in a series of CAD/CAM images late last year. It’s claimed to provide the new M5 with vastly improved torsional rigidity and the basis for a significant change in chassis tuning compared with the outgoing M5, which was introduced to the UK in 2011.
Visually, the new car is set apart from other current 5 Series models by extensively restyled bumpers, an altered kidney grille design, wider front wings with chromed vent elements behind the front wheel arches to extract hot air from the engine bay, M-specific mirror housings, wider sills, a prominent rear diffuser element and signature quad chromed tailpipes.
Dimensionally, the M5 has grown. Length is up by 36mm to 4935mm and the car is now around 8mm wider, at 1870mm. The wheelbase is also 7mm longer than that of its predecessor, at 2975mm. In combination with front and rear tracks that extend beyond the 1625mm and 1580mm of today’s model, this provides the M5 with a larger footprint than at any time since its introduction in 1981.
Power for the new M5 comes from a heavily reworked version of today’s twin-turbo 4.4-litre V8 petrol engine, which carries the S63 designation. It features a modified induction process with changes to the intercooler and new twin-scroll turbochargers for improved combustion and thermal properties.
The 90deg V8 is said to deliver greater power and torque than the limited-volume M5 Competition Package model launched as a swansong for the old M5 last year. With 592bhp and 516lb ft of torque, that model has the distinction of being most powerful M5 yet.
For context, the most powerful variant of the latest 5 Series, the new M550i xDrive, runs a milder version of the twin-turbo V8, developing 456bhp and 480lb ft.
Channelling the new M5’s prodigious reserves to the road is an eight-speed torque-converter automatic gearbox. The replacement for the existing seven-speed dual-clutch automatic unit is based around the standard ZF-produced gearbox used in other 5 Series models. Software will provide up to five driving modes, including an M Dynamic setting, accessed through buttons mounted on the steering wheel.
The new gearbox is allied to a specially developed version of BMW’s xDrive all-wheel drive system, which uses a multiplate wet clutch located in the gearbox on the output to the front driveshaft. It provides a continuously variable split between front and rear axles.
In M Dynamic mode, the four-wheel drive system is programmed to deliver 100% of drive to the rear wheels in a process similar to the drift mode made available on the latest E63 S.
With four-wheel drive providing added traction off the line, the new M5’s 0-62mph time is expected to dip well below that of its rear-wheel-drive predecessor and at least match the 3.5sec of the new E63. That would make it 0.4sec quicker than the now discontinued M5 Competition Package and an 0.8sec improvement on the standad version of the previous M5.
Top speed will again be restricted to 155mph, although an optional M Driver’s Package will enable buyers to raise it to 190mph with new engine management software and the fitment of Z-rated tyres.
Details of the new M5’s chassis set-up remain under wraps. However, engineers involved in its development say it adopts a largely bespoke double wishbone (front) and multi-link (rear) suspension system, together with new electro-mechanical steering that includes the active rearsteer function available on selected 5 Series models.
The new M5 will be built alongside other 5 Series models at BMW’s Dingolfing factory in Germany and production is set to begin shortly before its unveiling in September. As with its predecessor, the new model will be sold in saloon guise only.
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Also see: BIMMERPOST rendering of upcoming F90 M5 based on CAD images.