F10 520d has significant vibrations at 2000-3000 RPM in 5th and 6th gears.

[NAVITEL]

Greetings. Initially, when I depress the accelerator pedal halfway, the vehicle accelerates smoothly. However, when I fully depress the accelerator, the car begins to vibrate significantly at high speeds, specifically in the 5th and 6th gears, within the range of approximately 2000 to 3000 RPM. Beyond 3000 RPM, the car accelerates normally and operates smoothly.

The vehicle operates smoothly in gears 1 through 4, exhibiting no vibrations at any speed, RPM, or accelerator pedal position.

It seems that a portion of the engine's power is not transmitted to the rear wheels, resulting in significant vibrations in the chassis until certain RPMs are reached.

Actions undertaken:

Four new tires
All new brake discs and pads
New crankshaft pulley
New engine mounts and gearbox mount
Flywheel and clutch mechanism
EGR and EGR cooler
Propshaft central bearing

The mechanic examined and tested the vehicle, and I was informed that there are no concerns.

Propshaft Suspension
Propeller shaft joint
Both driveshafts
No diagnostic trouble codes present

I am interested in any ideas or if someone has had a similar situation. Thank you! I have extensively researched related subjects but cannot locate any information on that particular topic.

[colinallcars]

Your description suggests it is due to the engine rather than a driveline vibration. When I had vibration in the driveline of my old F11, it occurred at a certain pace rather than engine speed; hence, it persisted even with the clutch disengaged.

What equipment was used for the scanning, and has any real-time data been examined during the occurrence of the issue?

[NAVITEL]

Thank you for your insights. You said that residual vibration persists after the clutch is disengaged; I too experience similar vibrations, however they are not constant and occur only at certain speeds.

I am uncertain about the equipment used for the scan; nevertheless, I can review the documentation later. If you are aware of the necessary parameters to be examined, I can consult with ISTA-D.

Additionally, I would like to note that vibration intensity is contingent upon engine load.

[DMGRS]

Are the wheels aligned?
Unusual, and it occupies my thoughts entirely.

[NAVITEL]

Greetings. You are correct; it is very peculiar, and I have been attempting to identify the underlying problem for years. Last year, I purchased new tires and wheels, which were balanced, and the wheel alignment was also performed.