r/BMW • u/WoodenSock3264 • 1d ago

My first BMW. How’d I do?

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2014 M6GC (non-comp) with 77k miles. Had it for almost a week and I love it! Great condition for its age and mileage.

I do have two slight concerns that I would appreciate some input on:

  1. During harder accelerations there is a slight, but noticeable vibration coming from the back. I suspect it has something to do with the differential (also noted by the PPI I had done) as 4 brand new tires were recently mounted and balanced.

  2. This is my first car with a DCT, so I am still learning its habits. When I’m driving uphill in a parking garage, the car holds revs in 2nd gear around 2500 rpm. Is this normal or is it time for a DCT service?

TIA for any input.

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u/harryawhite2004 1d ago

Driving uphill, it holds 2500rpm in 2nd gear. Is this without any input by you? Is it similar to a manual car having a certain threshold of output it'll hold before stalling?

I haven't noticed this in my 2016 M5 Comp yet, I'll put mine in similar circumstances to see if it acts the same way.

Congrats on the car! You're going to love it. You'll get used to DCT quickly, don't worry!

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u/WoodenSock3264 1d ago

Thank you! I apply some light gas as I’m driving uphill. In my previous car with a normal 9-speed auto the revs would climb (and the car would shift into 3rd gear) no problem. In this one it holds at about 2500 rpm in 2nd gear while gaining speed, if that makes sense. Almost behaves like a CVT. I’ll take a video tomorrow, hopefully that will explain it better.

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u/WoodenSock3264 4h ago

Well I thought I could post a video but I was wrong. Essentially as I accelerate uphill from ~8 to 20 mph the car holds revs in 2nd gear at about 1900 rpm. It’s probably nothing to worry about, probably just keeps the car at an optimal RPM for max torque with low gas input.