12-27-2014, 02:17 AM | #1 |
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Transmission Issues 2015 M5
Hello all
I am new to this forum, at least new to posting and just got a new 2015 M5. I read the posts on this forum regarding feeling a "jerk" or "jerking" when you are taking off from a light. Even when you go easy on the throttle, the take off is not too jerky but it seems like it takes a while to get going. I should be able to drive this car without feeling a jerk when I take off. So has the solution been to have "transmission adaptations" done by the dealer? Has anyone had this problem have it resolved permanently and how was it solved? |
12-27-2014, 06:50 AM | #2 | |
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The only times I notice it is when I am parking on my garage and stop short of where I want to be and touch the has again to move a foot or so forward. OR after I have really been hammering the gas pedal and am in sport at a light and try to take off slow, she will jerk.
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12-27-2014, 08:33 AM | #3 |
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The DCT is going to feel jerky to you if you are always using the fastest shift settings, no matter if you are using S3 or D3. I guarantee you that if you start using S1 or D1 more often, you will "think" that the DCT is a lot smoother. The DCT has different shift modes for a reason. Consider D3 and S3 modes as for the race track only and the other 4 modes for the street. Although S3 and D3 can certainly be used for puttering around town at 25mph and below, it's really just too fast for those slow speeds. Therefore you get that jerkiness feeling because the car wants to give you the fastest shifts possible. This also applies to clutch engagement by the DCT from a stop. Also many people have reported a lag in clutch engagement from a dead stop sometimes. This is somewhat true. A lag occurs due to 2 things, 1 is turbo lag, 2 is the differential not being able to give you all the torque when you don't know how to manage the throttle from a dig. The F10 M5 requires a lot more finesse with the gas pedal because of the torque and its RWD. Learn how to you use your M5 by practicing with it. Take the time to seriously test the different modes. This isn't an RS7 or Porsche where you can have no skill and just mash the pedal everywhere.
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12-27-2014, 10:02 AM | #4 |
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I drive it generally in efficient mode at all levels, so default when you turn it on. It doesn't even have 500 miles on it right now. I have played around with it a few times, meaning driven it hard etc but I am driving it at defaults when you turn on. So if that's the case, it should be in D1 from the stop and so what I am complaining about is occurring with D1. It seems like I should not have to worry about or manage throttle when I got kick ass daily driver. Not sure from a marketing view why the car would be doing this.
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12-27-2014, 11:08 AM | #6 | |
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My M3 is a "race car" and the DTC and brakes dont do this, or squeel like the M5. The M4 DCT doesnt do this. So why does the M5? Because racecar? Pls. BMW needs to fix this.
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12-27-2014, 11:09 AM | #7 | |
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I do the same thing, but its ridiculous that ones has to do that to drive it normally.
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12-27-2014, 11:17 AM | #8 |
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I hold the position and always will, that it is the driver and not the car. I've owned the F10 M5 for over 2 years now and never experienced jerkiness from the DCT or the throttle, unless I am in D3 mode or a higher throttle setting. I will admit though that there is in fact some turbo lag with the catted stock downpipes.
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12-27-2014, 11:20 AM | #9 | |
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12-27-2014, 02:01 PM | #10 | |
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12-27-2014, 04:51 PM | #11 | |
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Yes and I also look like a grandma when I miss judge my parking spot but oh well, I just need to improve my distance skills. I still love this car.
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12-27-2014, 09:39 PM | #12 |
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Talked to a friend who is a bmw tech. He had me take the button near "stick" shift (the one that looks like it has a graph going from short to long) to bump it all the way up. Result: computer allows revs to go up to 4000 plus before shifting BUT no jerking off light! Everything else on efficient mode. He basically said the car is meant to be driven as a stick and efficient mode all around is simply going to result in the hesitation or jerking I have experienced.
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