The second generation of the BMW 6 Series consists of the BMW E63 (coupe version) and BMW E64 (convertible version) grand tourers. The E63/E64 generation was produced by BMW from 2003 to 2010 and is often collectively referred to as the E63.
The E63 uses a shortened version of the E60 5 Series chassis and subsequently shares many features. The car initially drew criticism, due to its controversial styling and complicated iDrive system.[2][3]
The M6 model was introduced in 2005 in coupé and convertible body styles. It is powered by the S85 V10 engine shared with the E60 M5, and most M6s were produced with a 7-speed automated manual transmission ("SMG III").[4]
The controversial rear styling, first seen on the E65 7 Series, was nicknamed "Bangle Butt" by critics.[6] BMW described the styling philosophy as "flame surfacing", where concave and convex shapes meet to create sharp edges.[7][8]
To reduce weight, the doors and bonnet are made of aluminium,[9] and the boot and front wings are made of carbon-reinforced plastic. The kerb weight is 1,490–1,930 kg (3,280–4,250 lb).[citation needed]
Convertible models featured a non-conventional convertible top design with side fins[14] and an integrated wind deflector that can be raised or lowered at any time.
Engines
Top speed for all models is electronically limited to 250 km/h (155 mph).[15]
The M6 is powered by the 5.0-litre naturally aspirated S85 V10 shared with the E60 M5, generating 373 kW (500 hp) at 7,750 rpm[26] and 520 N⋅m (384 lb⋅ft) at 6,100 rpm.[27] The majority of the cars were produced with a 7-speed automated manual transmission ("SMG III"), however a 6-speed manual transmission was also available in the United States.[28]
The M6 coupé has a carbon fibre roof in order to reduce weight and for a lower centre of gravity.[29][30] Additional features included: sports seats, larger front and rear brakes, an M-performance instrument cluster, a carbon-fibre roof (coupé only), and an optional M head-up Display.[31] The car also has quad exhaust-pipes and larger, more aerodynamic air intakes.
A total of 9,087 coupés and 5,065 convertibles were built; amounting to 14,152 cars.[32]
In September 2007, the facelift (LCI) was introduced for the 2008 model year. Major changes include:
635d model introduced, powered by the M57 diesel engine.[34]
630i engine upgraded from the N52 to the N53 in countries with low sulphur fuel.[35]
Exterior design changes including headlights,[36] tail-lights, bumpers, and the third brake light on coupé models was relocated to the trunk lid.[37][38]
Interior design changes including updated climate controls, and new electronic gear lever with the ability to change gears manually via steering wheel paddles.[39]
Edition Sport trim introduced featuring a stiffer anti-roll system and an updated exhaust system for 650i models.[40]
Pre-facelift front
Pre-facelift rear
Post-facelift front
Post-facelift rear
2009
iDrive upgraded to CIC version (previously CCC)[41]
Safety
Models feature BMW's Advanced Safety System, enabling the car to decide the most effective deployment of the airbags in a crash.[42] Safety equipment includes active anti-roll bars, dynamic stability control, front knee airbags (in accordance with US regulation), BMW roadside assistance, and an SOS emergency system.[43] Convertible models also feature an automatic rollover protection system, where roll-bars behind the rear seats are automatically deployed in a rollover.[44] From 2008, active head restraints became a standard feature on all seat options, reducing the risk of neck injuries in a rear-end collision.[43][45]
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