Alle specs: http://f80.bimmerpost.com/forums/showth ... p?t=923203
Availability / Production
Comes to U.S. as 2015 Model Year
Sales begin early Summer 2014
Complete US-specific specs, pricing, options, and packages will be announced closer to the on-sale date
M3 produced in Regensburg plant (built alongside 3 Series Sedan)
M4 produced in Munich plant (built alongside 4 Series Coupe)
Engine / Exhaust
3.0L inline 6 cylinder Twin Turbo engine (S55)
2,979 cc
Stroke/Bore: 89.6mm / 84mm
425 HP from 5500-7300 RPM
406 LB-FT torque from 1850-5500 RPM
0-60 MPH: 3.9 seconds (DCT) / 4.1 seconds (manual)
7600 RPM rev limiter
10.2:1 compression ratio
Top Speed: 155 MPH / 250 KMH
Nearly 25% fuel consumption and emissions reduction over E90/E92 M3
22 pounds / 10 kilograms lighter than S65 V8 predecessor engine
Two mono-scroll turbochargers
Mitsubishi mono-scroll turbochargers
18.1 PSI / 1.25 BAR max peak
Pre-tensioned in Sport and Sport+ modes (keep spinning at a high rate of speed even after throttle lift-off, for ultra quick response - more details)
Impulse charging for optimized responsiveness
Flow-enhanced manifolds
Electric wastegate actuator
Direct Injection, Valvetronic variable valve timing and Double-VANOS continuously variable camshaft timing
Closed-deck crankcase design (4.4 lbs / 2kg lighter)
Twin-wire arc-sprayed coating used instead of liners (saves weight)
Forged, torsionally rigid crankshaft
Track-specification cooling system
Air intake system features an indirect intercooler
Water cooler repositioned to the side for the high- and low-temperature water circuits, and the engine and transmission oil (if the M Double Clutch Transmission is specified)
Additional electric coolant pump cools the turbocharger bearing mounts when the car is stationary
Low-weight magnesium oil sump features special cover to limit movement of the oil under the effects of strong dynamic lateral acceleration
Under extreme longitudinal acceleration and deceleration, an oil extraction pump and a sophisticated oil return system situated close to the turbocharger help to maintain stable oil circulation
Double-flow oil recirculation pumps
Turbocharger suction system
Main radiator plus additional radiators for the high- and low-temperature circuits, turbocharger and transmission
Large indirect intercooler (sits atop engine, necessitating hood bulge)
Low-weight magnesium oil sump (2.2 lbs / 1kg lighter)
Temperature-stabilizing electric water pump
Electronically control Exhaust
Electrically controlled flaps just before the rear silencer minimize exhaust back-pressure and produce a BMW M sound, as well as giving precise feedback on engine load
When closed, flow is forced into and laterally across the silencer; when open, flow is more directly through the narrow part of the silencer
Different selectable drive modes feature different engine sound profiles
Catalysts with metal substrate (less restrictive than ceramic)
Exhaust always exits all four tail pipes
Transmission
7 Speed M Double Clutch Transmission (M-DCT) with Drivelogic
Third generation M-DCT
Integrated Launch Control function
Stability Clutch Control opens clutch when car is understeering to bring it back into line
Drivelogic modes can be selected for more comfortable, economy focused or sportier characteristics
6 Speed Manual Transmission
Robust double-plate clutch
More compact and quieter than predecessor
26.4 pounds (12kg) lighter than predecessor
New carbon friction linings in synchronizer rings increases shift comfort
Dry sump lubrication
Automatic throttle blip downshifts
Active M Differential
Hollow lightweight output shafts
Electronically controlled multi-plate limited slip differential (LSD)
Control unit links up with the DSC (Dynamic Stability Control) system and also takes into account the position of the accelerator pedal, the rotational speed of the wheels and the car’s yaw rate
0% - 100% degree of lock
M Dynamic Mode allows greater wheel slip, but with the safety net of DSC
CFRP drive shaft
feeds engine's torque from gearbox to rear differential
increased stiffness
reduced rotating mass for better acceleration and throttle response
single-piece unit with no center bearing
40% weight saving over predecessor
tested for speeds up to 205 MPH
Electric Power Steering
Entirely new electric power steering (EPS) unit, built by ZF
Servotronic function electronically adjusts the level of steering assistance according to the car's speed
3 modes: Comfort, Sport, Sport+ (standard option)
Specially tuned for M3/M4
Will not compensate for understeer, oversteer, coarse road surface. Motor will not help unwind the steering wheel and it will self-center by by natural forces
Suspension / Tires / Brakes
Optional EDC Adaptive M Suspension features 3 modes: Comfort, Sport, Sport+
Double-joint spring strut front axle
Lightweight aluminum construction for components such as control arms, wheel carriers and axle subframes saves 11 pounds (5kg) over a conventional steel design
Play-free ball joints and elastomeric bearings developed specially for the M3/M4 ensure an optimum and direct transfer of forces both laterally and longitudinally
Aluminum stiffening plate
CFRP front strut brace
Five-link rear axle
Forged aluminum construction for control arms and wheel carriers - reducing unspring mass of wheel-locating components by around 6.6 pounds (3 kg)
Rear axle subframe bolted directly to body structure (bolted joints between the axle subframe and the body sills, without use of elastic rubber elements)
Tires incorporated into construction process for the axles
low-weight 18-inch forged wheels (front axle: 9 J x 18, rear axle: 10 J x 18) with mixed-size tires (front axle: 255 mm, rear axle: 275 mm).
19-inch wheels and tires are available as an option (in Ferric Grey or Black)
BMW M compound brakes standard (in blue)
four piston front / two piston rear
BMW M carbon ceramic brakes optional (in gold)
six piston front / four piston rear
Lightweight Construction
BMW M4 Coupe features DIN curb weight of 1,497 kilograms (3300 pounds), around 80 kilograms (176 pounds) lighter than a comparably equipped predecessor model.
Contoured (double-bubble) CFRP roof on both M3 Sedan and M4 Coupe
saves 11 pounds (5kg) on M3
saves >13 pounds (6kg) on M4
CFRP trunk lid on M4
CFRP drive shaft saves 40% weight
CFRP strut brace (weighs 3.3 pounds / 1.5 kg) offers more rigidity than aluminum counterpart
CFRP roof bow
Aluminum front fenders and hood
Aerodynamics
Front apron, smooth underbody and gurney spoiler at the rear of the M3 Sedan (or integrated spoiler lip at the rear of the BMW M4 Coupe) reduce lift by an equal degree at the front and rear axle.
Inflowing air through the engine oil cooler creates a Venturi effect, which reduces front axle lift and, in so doing, improves the steering.
Air Curtain and M gills with integrated Air Breather rearwards of the front wheels minimize turbulence in the front wheel arches.
Aerodynamically optimized exterior mirrors in twin-stalk style.
Interior
Front seats visually inspired by bucket seats, with illuminated M logo on seat backrests
Contoured rear seats made from lightweight composite material can be folded in 60:40 split
M Sport leather multifunction steering wheel with chrome trim and color contrast stitching
Anthracite roof liner standard
M door sill finishers, M driver’s footrest, M gearshift lever
Technology
BMW M Laptimer app [more details]
Optional Head-Up Display (HUD) (comes with gear display, rev counter and Optimum Shift Indicator, etc.)
Physicals / Curb Weight / Construction
Length:
M3 - 181.6 in / 4615 mm (1.3 inches longer than E90 M3)
M4 - 183.8 in / 4671 mm (2 inches longer than E92 M3)
Width:
M3 -
M4 - 73.6 in / 1870 mm(1.9 inches wider than E92 M3)
Height:
M3 - 56.0 in / 1424 mm (1 inch lower than E90 M3)
M4 - 54.4 in / 1383 mm (1.2 inches lower than E92 M3)
Wheelbase: To Come
Front track: To Come
Rear track: To Come
Weight:
3300 lbs / 1497 kg (all fluids, 90% fuel, no driver)
3466 lbs / 1572 kg / (plus 68kg driver and 7kg luggage)
M4 is 80kg (176 pounds) lighter than E92 M3 coupe, when comparably equipped
Cd (drag coefficient): To Come
Center of gravity: To Come
50:50 weight distribution
Note: For more details on the above highlighted features and equipment, see full press release below
Note: For preliminary U.S. options/packages preview, see dealer's 2014 BMW M3/M4 Order Guide (customer order/price guides will come closer to launch date)
Top Gear schreef:
BMW has finally, officially, taken the wraps off the hotly anticipated, straight-six-powered, M4 Coupe and M3 saloon. We've been over the difference in nomenclature, but, to remind you: the M3 is the four-door, the M4 the two-door (and upcoming convertible). Simple.
And, though it's lost a pair of cylinders, this is the most powerful M3 in history. Both cars pack a 3.0-litre straight six with a pair of mono-scroll blowers, returning 431bhp with a 7,600rpm redline, and a whopping 406lb ft. The old naturally aspirated V8 made 414bhp and 295lb ft. Even more impressive figures are the boring-but-practical digits: consumption and emissions are down by 25 per cent, giving 32.0mpg and 204g/km. We're promised it'll sound good, too: there's a flap in the exhaust pipe that varies the sound you hear depending on the car's mode.
This power is fed through a standard-fit six-speed manual gearbox with an auto throttle-blipping function, though you can spec the seven-speed double clutch (DCT) transmission featuring something BMW officially calls (and we're really, really not making this up)... the Smokey Burnout function. Yes folks, the new M3 and M4 are hooligans.
Both M3 and M4 are, of course, staunchly rear-wheel-drive, and that extra power moves less weight: both are roughly 80kg lighter than their predecessors, with the M4 weighing in at 1500kg, and the M3 saloon just 23kg heavier. Both will do 0-62mph in 4.3 seconds (4.1s with the DCT ‘box) and run on to a limited 155mph.
There's nothing limited about the sideways, though. BMW itself says the M Dynamic Mode "allows greater wheel slip and therefore easy drifting", which is the sort of technical insight of which we very much approve.
There's also some serious aero going on: air curtains on the front bumper and air breathers in the front arches that massage the air around the front of the car, a smooth underbody, a Gurney flap on the M3's bootlid, and a CSL-style CFRP rear-end on the M4 (oh, and speaking of CFRP, both models get a roof made of the stuff, saving up to 6kg). There are carbon ceramic brakes, too.
Inside, you get standard bucket-style M Sport leather seats that look fantastic, an illuminated ‘M' logo on the backrests, a decent-sized boot and a BMW M lap timer.
Prices for the saloon start at £56,175, while the M4 Coupe starts at £56,653 (and, most will be glad to hear, comes in colours other than gold). Sad to see the naturally aspirated V8 go, or will you take more power, less weight and a twin-turbo straight six?
Autoblog.nl schreef:Vanochtend lekten de persplaten van de nieuwe generatie M3 en M4, en dit zette de poort open tot een algeheel informatielek. De Duitse media knallen nu alle specs er in, en surprise surprise, de nieuwe M3/4 is sneller dan zijn voorganger. Maar vooral lichter!
Laten we met het laatste beginnen: bij performance-auto’s is een zo laag mogelijk gewicht gewenst: je gaat sneller en strakker de bocht door, er hoeft bij acceleratie minder massa in beweging te worden gezet, je pk-gewichtsverhouding knapt er van op, en het verbruik (en dus de nieuwprijs in sommige landen) daalt.
Het is BMW gelukt de M4 nét onder de 1.500 kilo te krijgen, het DIN-gewicht komt uit op 1.497 kg. Het EU-gewicht, waarbij met 1 inzittende (68 kg) en een paar kg bagage (7 kg) rekening wordt gehouden, ligt op 1.572 kg. De M3 weegt 1.520 kg. Ter vergelijking: de E92 M3 weegt 1.575 kg (DIN). Hieronder vergelijken we de M4 met zijn voorganger, de E92 M3.
Prestaties
Hoewel het er niet bij wordt vermeld, gaan we er van uit dat onderstaande cijfers in combinatie met de DCT 7-bak gemeten zijn.
De M4 wordt aangedreven door een 2.979 cm3 grote zes-in-lijn met TwinPower Turbo die tot 7.600 toeren kan draaien, net geen 8.000 dus. Hij levert 431 pk en 550 Nm bij 1.850 – 5.500 tpm. Zeg maar bijna altijd maximaal koppel dus. Yay, drukvulling!
0-100 km/u doet de achterwielaandrijver in een ontzettend rappe 4,1 seconden en de top is uiteraard afgeregeld op 250 km/u. Opteer voor het M Driver’s Package, en de naald houdt pas bij 280 km/u op met klimmen. De elasticiteit van 80-120 km/u in de 4e versnelling komt uit op 3,5 seconden. Dat is net zo snel als een Porsche 996 Turbo en een Ferrari 575M Maranello F1, en zelfs 2 tienden sneller dan een Ferrari 599 GTB Fiorano F1 en een Pagani Zonda S…
Het gemiddeld verbruik bedraagt 8,3 l/100km, met een bijbehorende CO2-uitstoot van 194 g/km. Echter, waarschijnlijk kom je zonder al te veel je best te doen wel in de dubbele cijfers terecht.
De E92 M3 was met zijn atmosferische 4 liter V8 nog goed voor 12,4 (11,2) liter gemiddeld, en een uitstoot van 290 (263) gram. 0-100 gaat in 4,8 (4,6) seconden, en het vermogen bleef steken op 420 en 400 Nm. 80-120 km/u ging in 4,9 (4,2) seconden.
Afmetingen
De M4 Coupé meet (zonder spiegels) 4.671 x 1.870 x 1.383 milimeter, de E92 M3 4.615 x 1.804 x 1.424 mm. De nieuwe M is dus langer, breder en lager, maar ook lichter. De pk-gewichtsverhouding (DIN/EU) komt nu op 3,47/3,65 kg per pk uit. Dit was 3,75/3,93. Tot zover de feiten, we maken ons nu op voor introductie in Detroit (jan. 2014) en de eerste rij-indrukken, een tijdje daarna.
Update: de nieuwe M3 en M4 zijn op het Salon van Brussel voor het eerst in Europa te zien. Ook de 2 Coupe en 4 Cabrio beleven er hun Europese premiere.
[youtube][/youtube]
rulezzz
