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  1. #1
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    Edmunds 2013 BMW 650i Gran Coupe N63tu test numbers and comparison to 640i - 1/4 mile in 13.1@109.4, 4533 pound curb weight - Weak? Too heavy?

    The BMW 650i Gran Coupe has the updated N63tu motor which offers 445 horsepower, 45 horsepower more than the standard N63 twin turbo 4.4 liter direct injected V8. Now, a 109.4 mile per hour trap speed is not all that bad but not really all that good for 445 horsepower either. The 13.1 elapsed time is fairly slow though. Especially when compared to the competition, say the Audi S7, which in stock form is capable of almost a full second faster time at 12.2@112.42.

    Click here to enlarge

    Part of the problem is the lack of all wheel drive but the main problem seems to be the weight. 4,533 pounds... ouch. The Audi S7 even with its all wheel drive system is about 100 pounds lighter. The X-Drive version of the 650i Gran Coupe balloons to an absurd SUV like 4670 pounds. Efficient Dynamics are at work where again?

    Both the Audi S7 and the Mercedes-Benz CLS550 are quicker and faster than the 650i. Both are lighter and even the 4Matic Mercedes-Benz CLS550 is lighter than the rear wheel drive BMW 650i by about 200 pounds. It isn't just Mercedes building lighter and faster cars than BMW, Audi is too, and both of them are even doing it with all wheel drive. Mercedes-Benz doing it with both rear and all wheel options. Something just isn't right in Bavaria.

    Vehicle: 2013 BMW 650i Gran Coupe
    Odometer: 1,517
    Date: 1/29/13
    Driver: Chris Walton
    Price: $88,095


    Specifications:

    Drive Type: Front engine, rear-wheel drive
    Transmission Type: Eight-speed automatic
    Engine Type: Twin-turbocharged direct-injected V8, gasoline
    Displacement (cc/cu-in): 4,395/268
    Redline (rpm): 7,000
    Horsepower (hp @ rpm): 445 @ 5,500
    Torque (lb-ft @ rpm): 480 @ 5,500
    Brake Type (front): 13.7-inch ventilated discs with sliding calipers
    Brake Type (rear): 13.6-inch ventilated discs with sliding calipers
    Suspension Type (front): Independent multilink, coil springs, self-adjusting variable dampers, lower control arms, self-adjusting active stabilizer bar
    Suspension Type (rear): Independent multilink, coil springs, self-adjusting variable dampers, self-adjusting active stabilizer bar
    Tire Size (front): 245/35ZR20 (95Y)
    Tire Size (rear): 275/30ZR20 (97Y)
    Tire Brand: Dunlop
    Tire Model: SP Sport Maxx GT
    Tire Type: Asymmetrical summer performance run-flat
    As Tested Curb Weight (lb): 4,535


    Test Results:


    Acceleration

    0-30 (sec): 2.3 (2.7 w/ TC on)
    0-45 (sec): 3.6 (4.1 w/ TC on)
    0-60 (sec): 5.2 (5.8 w/ TC on)
    0-60 with 1-ft Rollout (sec): 4.8 (5.3 w/ TC on)
    0-75 (sec): 7.0 (7.6 w/ TC on)
    1/4-Mile (sec @ mph): 13.1 @ 109.4 (13.5 @ 108.7 w/ TC on)


    Braking

    30-0 (ft): 29
    60-0 (ft): 114


    Handling

    Slalom (mph): 66.3 (65.2 w/TC on)
    Skid Pad Lateral Acceleration (g): 0.88 (0.85 w/TC on)

    Db @ Idle: 40.0
    Db @ Full Throttle: 71.1
    Db @ 70-mph Cruise: 60.0

    RPM @ 70: 1,650

    Comments:


    Acceleration:
    Default mode (Comf/Drive) hesitates slightly from a dead stop. Each successive mode makes the car slightly quicker (Sport, Sport+ and DS) but launch delay persists regardless. The time gap between slowest and fastest 0-60 is significant, about a half-second in total. The traction control is effective, but it has a short leash. Once underway, the power builds quickly and carries all the way to the 7,000-rpm redline. I "beat" traction control with a two-footed non-wheelspin launch with Trac off. There's ample cooling as trap speeds remained steady. Upshifts are both fast and smooth, as are matched-rev downshifts. In manual mode, it will allow the engine to bounce off the rev limiter.


    Braking:
    Given that the 2013 BMW 650i Gran Coupe weighs 4,535 pounds, a 114-foot stop from 60 mph is impressive. Distances grew to just 121 feet after four more stops. The pedal remained firm and effective regardless and the car stopped flat and straight.


    Handling:


    Skid pad:
    With Comf mode selected, the Gran Coupe felt heavy and reluctant to probe its grip limits. The throttle would close just shy of the tires howling. The steering feels unnecessarily heavy, too. In Sport+ mode, the car felt less ponderous and it was difficult to detect any ESC intrusion at all, and the results show a measurable improvement.


    Slalom:
    In Comf mode, there's plenty of grip and less body roll than expected. The ESC intrusion is subtle and short-lived and likely keeps the rear from sliding. In Sport+ (with dynamic traction control), the performance envelope is noticeably larger and the stance firmer and more confident. ESC was barely detectable unless I got it really wrong. In either mode, the active-steering option is very disconcerting and doesn't offer expected seat-of-the-pants response.

    2013 BMW 650i Gran Coupe 2013 BMW 640i Gran Coupe
    Curb weight as tested: 4,535 4,292
    0-30 (sec.): 2.3 2.1
    0-45 (sec.): 3.6 3.6
    0-60 (sec.): 5.2 5.7
    0-60 with 1-ft Rollout (sec.): 4.8 5.4
    0-75 (sec.): 7.0 8.6
    1/4-mile (sec @ mph): 13.1 @ 109.4 14.2 @ 95.0
    30-0 (ft): 29 27
    60-0 (ft): 114 110
    Skid Pad Lateral Accel (g): 0.88 0.87
    Slalom: 66.3 64.9

  2. #2
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    2 out of 2 members liked this post. Yes Reputation No
    Click here to enlarge
    Current: '00 S2000
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  3. #3
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    Click here to enlarge Originally Posted by whoosh Click here to enlarge
    Click here to enlarge

    That's funny
    09' M3 AA Gen 2 Level 2 S/C
    03' Viper Roadster- FBO
    10' X5M
    09' Cayenne GTS
    11' Jaguar XFR
    08' CLS63 AMG
    08' EVO X GSR- FBO
    13' F10 550i M Sport

    Past:
    07' C6 Z06
    11' M3 Comp DCT
    10' C63 AMG
    10' SVT Raptor 6.2
    12' BOSS 302
    11' E92 335i
    09' C63 AMG -
    01' C5 Z06- White, FBO+Cam
    11' E92 335is- Sapp Blk
    08' E82 135i- Sapphire Blk
    10' Audi S5 6-Speed
    04' SVT Lightning
    08' E90 335i 6-Speed- Blk
    08' C63 AMG- Blk
    09' CTS-V Sedan- Blk Raven
    06' E60 M5 SMG
    Click here to enlarge

  4. #4
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    Add the fact the 6GC carries a $15k premium over the CLS500 and $9k over the S7.

    Check out a GC last time at the dealer, it is highly over hyped.


  5. #5
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    13.1 E/T huh... a 6 cylinder A7 is barely a few tenths slower

  6. #6
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    Click here to enlarge Originally Posted by M3_WC Click here to enlarge
    Add the fact the 6GC carries a $15k premium over the CLS500 and $9k over the S7.
    This as well...

  7. #7
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    Click here to enlarge Originally Posted by Drunkenup Click here to enlarge
    13.1 E/T huh... a 6 cylinder A7 is barely a few tenths slower
    All style over substance.

  8. #8
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    I hate the fact that the 6-series Gran Coupe is so large and heavy. It looks so good, yet it is a waste of engine power. The automotive industry regulators should impose a 3500lbs limit on cars, this would probably be a very efficient way to reduce overall emissions ad would force manufacturers to put as much emphasis on the weight reduction technologies as they do on the hybrid engines.

  9. #9
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    I agree with that but the public is hungry for new options especially in this market. More toys = more weight. As far as building cars lighter with the same features will mean more exotic materials and higher prices.

  10. #10
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    We don't need this $#@!. Wifi in a $#@!ing car? I have a house with a computer that works fine. Half these options are useless.

  11. #11
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    I think it even don't have wifi.
    Very slow results, even A7 3.0 BiTDI is quicker than this. This is crazy.

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