• Jan 27th 2007 at 10:17AM
  • 13
When Automobile got their paws on a six-speed manual version of the M5, they were none too pleased that BMW's engineers wouldn't allow drivers to fully disable the traction control. At the time, we assumed that BMW's legal boffins pictured overly enthusiastic Americans, stomping the go pedal and promptly winding up in a ditch.

Not so, according to Car. The magazine learned that the M division had no way of controlling clutch plate actuation, which would normally quell the axle tramp caused by the V10's prodigious power delivery. Acceleration times would rise and drivetrain components' lifetimes would fall. Hence, the only conceivable solution was to make the DSC a permanent fixture within the Bimmer's brain.

Still, you can partly disable the system in M Dynamic mode within iDrive (if you dare), but that may not be enough for those who want to test the limits of adhesion of the 285s in the rear.

[Source: Car]

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    • 1 Second Ago
      • 8 Years Ago
      This is a test only. Do not re adjust your set.
      • 8 Years Ago
      Also, just a clarification. Does this mean stability control can't be switched completely off? Or just the traction control? If stability control can't be completely killed, then this excuse is nothing short of a flat out lie because traction control alone can quell axle tramp, etc...
      • 8 Years Ago
      I rolled an E39 540i (there was no DSC) and it seems like about half the E34 and E39 540s ever created have since been totalled. I don't like the "big brother" controls that BMW is usually pretty good about letting you turn off, but all you have to make is one mistake to completely destroy the car (and, possibly, yourself). With 500 hp on tap making that mistake would be VERY easy.
      • 8 Years Ago
      GM is not immune from limiting the powertrain output. In a recent Edmunds test, they found the 365hp 6.0L Silverado had a 4 second lag between WOT and full engine output - probably an electronic limiter to protect the powertrain. I wouldn't be surprised if GM's other high powered vehicle adopt a similar strategy.
      • 8 Years Ago
      In other news, the Mustang GT's came in 1st and 2nd in yesterday's race at Daytona in front of a bunch of Porsche's and BMW's.
      • 8 Years Ago
      I highly doubt it was entirely an engineering decision. As it stands the E60 M5 in stick shift form is about as quick to 60 as the old E39 M5 was. Launch control is already neutered on the US market SMG box and the automated manual is still quicker. Obviously the system steps in far too early.
      • 8 Years Ago
      It didn't ALL get posted ...

      Trucks have manuals as well and tow more weight. Self protection by BMW? Maybe they think it's low esteem to have someone patch out in their cars.
      • 8 Years Ago
      Ultimate Driving Machine? No wonder BMW changed their motto, they are now "Sheer Driving Pleasure."

      That does sound better to the geezers and old ladies that now buy their cars.
      • 8 Years Ago
      I can see BMW protecting themselves from drivetrain problems. Burned out clutchs, snapped ujoints and blown diff's can give them a bad reputation. They obviously don't trust a consumer who wants the manual tranny.
      • 8 Years Ago
      Didn't Clarkson smoke the diff on this car when he took it on their track? I'm pretty sure he raised a caution about this.
      • 8 Years Ago
      The Corvette Z06 has as much horsepower & more torque than the M5 and it doesn't have this problem. What gives?
      • 8 Years Ago
      An independent company... a company full of ideas?

      Sounds like they were too concern abaout some Automotive Journalists´opinion on the M. Besides didn´t we learned anything from Ferrari owners, this old folks have more money than experience behind the wheel, and that combination of factor is always bad.

      You don´t one good old dad who just cash 401k to crash into a tree in its new M6... dont cha?
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