Quote:
Originally Posted by Beezer1
I'd like to know if anyone has had any success in solving this.
My 2017 650i xdrive Gran Coupe M Sport (5000 miles) shakes between 1500-1900 rpm with light to moderate throttle. Especially noticeable when climbing hills on interstates. If using the cruise control, a manual downshift (raising rpm above 2000) immediately stops the shake, which returns as soon as the transmission upshifts. I can duplicate this behavior in any of the top 4 gears. I'm not sure if it happens in the lower gears because I can't find a hill that would allow me to stay in the problem rpm range.
My dealer has force balanced all 4 wheels, checked alignment and replaced the transfer case with no change in behavior. Most recently, they have given me a new loaner that is, except for color, identical to my car which exhibits the same unacceptable behavior. BMW tells the dealer that they have had similar complaints but have no solution.
Has anyone else experienced this behavior? How about anyone with a 2 wheel drive 650i? Any ideas on how to correct this?
|
I have a 2016 650i GC M sport that I had for over 3 years now. It had 5k miles when I got it. From day one it has had a vibration that seems to come from the middle where the transmission is. It happens with acceleration/gear change and it is less noticeable when NOT in Sport mode/exhaust valve is shut. When I first got the car I thought it was very odd, never experienced it with any other BMW. I was disappointed that a 6 months old $103 BMW with 5k on it would behave this way. To me it felt like NVH from a design flaw. I never asked the dealership to look into it. They have driven the car several times to test (repeatedly) warped rotors. It still happens to this day and I resigned to accept it as one of a few flaws in an otherwise beautiful and sexy beast. To me it feels that the transmission or the torque converter is vibrating when accelerating and changing gears. Quiet honestly it is a shame that a $100k BMW feels that way when my 2011 335i power train was super smooth. If anyone has had a similar experience please share it.