1. 10 Oct 2020 at 12:14 AM #61
    ASRman

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    Sorry to hear about the spin, but at least the car has minimal damage, and more importantly you are Ok.

    If you have been driving that particular road for 25 years as stated and was driving within your usual limits and not doing anything crazy, subject to tyres being in a decent condition, I'd say there is a good chance that there may have been some diesel or other oil spillage on that section.

    These cars can be unpredictable to an extent but to completely lose it like in that fashion under those circumstances tells me there was something not right with that road surface.

    On a side note however I do somehat agree with the comments on MDM being inconsistent and unpredictable. It seems to interfere far too much when you actually are looking for a bit of slippage but then seems to let you down once you're on full angle and need some help!
     
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  2. 10 Oct 2020 at 12:31 AM #62
    R60BBA

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    It’s also unpredictable because it has an electronic diff.

    Mechanical diffs are more straightforward.
     
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  3. 10 Oct 2020 at 12:34 AM #63
    Spyros

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    MDM is just a little less intrusive than having DSC fully on that's all. And as with any kind of intervention it's actually counter productive once the car is out of shape because you can't provide the inputs in the same way as if you had full control with everything switched off.
     
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  4. 10 Oct 2020 at 7:04 AM #64
    AJ13

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    Similar thing many years ago in a GTR.
    40 mph max, drying roundabout, just exiting and "bang" - car spun and ended up in opposite ditch. Car was written off, as kerb bent both axles.
    Mine was due to a very light coating of diesel from buses overfilling their tanks then it overflowing out as the rounded the roundabout in question.

    Thankfully your ok, cars can be fixed, people cant.
    Hope it works out.
     
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  5. 10 Oct 2020 at 9:32 AM #65
    Banksie

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    I’ve just done one of the MSV motorsport sessions at Donington in an M4. It was absolutely pouring down the whole session. Car was on new Pirelli tyres.

    I have to say the car was pretty impressive in the wet, we weren’t hanging about, we were up to 130 down the main straight before braking for the chicane onto the start finish line. That was really the only time the car was a bit of a handful, but mainly from aqua-planning.

    Anyway, normally you get a go in the fully track prepared M4 with a “pet” racing driver but due to COVID we just swapped seats with the instructor and went out for a lap with him driving. When we got back I asked him at what point did he change the traction control mode from fully on when I was driving it. He said he hadn’t! Well we were sideways quite a lot!

    If I learnt one thing from that session, it was that unless there is a massive amount of space, the MDM button on mine will never be getting pressed! There is enough scope with everything on to get as much sideways action on the public road as I’ll ever need!

    Hope you get your car fixed as quickly as possible OP.
     
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  6. 10 Oct 2020 at 9:35 AM #66
    stuartk

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    This and frankly what’s the point. Mostly on here to try and prove your some driving god as you turn the TC off. Errrrrrr ok Schumacher :muttley:
     
  7. 10 Oct 2020 at 9:51 AM #67
    Banksie

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    Maybe give the OP the benefit of the doubt? He’s had the car in a mode that he considered appropriate, but it’s caught him out and he’s posted the consequences for all to see and it’s promoted discussion and hopefully consideration, so that someone doesn’t have the same experience as him. He didn’t have to post his mistake, I know we live in a world where it’s considered great to see how much of a “numpty” you can be but I’m sure the OP has learned from this experience.
     
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  8. 10 Oct 2020 at 10:03 AM #68
    M4rkM

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    maybe because some of us like the drive and don’t like the feeling of traction control interfering, nothing to do with ‘proving’ anything
     
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  9. 10 Oct 2020 at 10:18 AM #69
    toplad

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    Sounds like it, I'd be very surprised it wasn't tbh.

    When you go across oil or some other contamination you have zero grip and cannot do anything about it, traction on or off.
    Its happened to me pulling up to a red light Luckily for me the road was clear, but I sailed through a red light and steering and brakes had zero effect, it was like someone had disconnected the steering wheel as I went lock to lock on the steering with no effect on trajectory whatsoever or feedback through the wheel.

    It was only when I noticed a broken down bus and oil over the junction I realised what was happening

    Important thing is your okay and you can replace the car
     
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  10. 10 Oct 2020 at 10:22 AM #70
    turbo87

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    Ouch! sorry to hear this hopefully you get this back on the road soon :)
     
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  11. 10 Oct 2020 at 10:35 AM #71
    Country Boy

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    This, I like MDM not to try and get a slide everywhere but to make the car feel more free to accelerate. Nothing worse than that mushy feeling of the TC holding the car back. However it will make me more aware of when to use it or not and as stated on here earlier TC off is actually nicer in the summer as its more predictable. I've obviously replayed what happened time and time again in my head and damp roads combined with MDM undoubtedly contributed in the main to what occurred but at no point did I think I was pushing it or trying to provoke the rear to move.
     
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  12. 10 Oct 2020 at 11:01 AM #72
    User 1075571

    User 1075571

    Well to be honest, they’re drivers cars for some and poseurs cars for others. Nothing wrong with MDM mode in the right conditions to have a little fun and it’s this functionality and the mindset behind it that sets BMW apart from Audi for example.

    The OP has gone to trouble share his misfortune for the benefit of others whilst risking criticism, rather than keep it quiet and pretend he is Schumacher.

    and MDM doesn’t equal TC off.
     
    User 1075571, Oct 10, 2020
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  13. 10 Oct 2020 at 11:02 AM #73
    Henry 145

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    MDM off on track is fun - apart from when chasing @Alex0 you hit the loud pedal and do a lovely big spin and eye ball the following R8!
     
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  14. 10 Oct 2020 at 11:03 AM #74
    jayukRS

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    Simple fact of that matter is MDM+M4+Damp roads=

    [​IMG]
     
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  15. 10 Oct 2020 at 11:10 AM #75
    swissfra

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    25 years, usual limits... hey @Country Boy is it possible you're just getting old?!
     
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  16. 10 Oct 2020 at 11:14 AM #76
    DeadEye

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    I'm pretty sure MDM doesn't stop you wheel spinning in a straight line does it?

    This, I think is the problem.

    i'm going to check in a minute.
     
  17. 10 Oct 2020 at 11:15 AM #77
    ASRman

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    :lolwsign:
     
  18. 10 Oct 2020 at 11:20 AM #78
    DeadEye

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    Because changing gear at 90mph chirps the wheels and full DTC cuts the power, for example.
     
  19. 10 Oct 2020 at 11:43 AM #79
    Country Boy

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    I don't feel it at 47, if I was I probably wouldn't be in this mess , lol!
     
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  20. 10 Oct 2020 at 11:45 AM #80
    Country Boy

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    So I've seen a couple of people mention that M4's are more twitchy than M3's, is this right?
     

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