For the last few years, my 2013 P85 has been experiencing unusual vibrations on the freeway. I've taken it to service a few times under warranty and each time they tell me everything is normal with the suspension. I don't believe this is the case, I believe they are just unable to diagnose the issue. I'm hoping community members can help me with some ideas on what it could be, so I can give service some suggestions on what to look for.
This is what I experience:
Two years ago I complained again of the issue and the senior technician took extra time and care to perform a road force balance. The vibrations were still there, but significantly reduced to the point where they didn't bother me. They seem to have increased again and they bother me again.
These are the components service has replaced over the last few years to try to address the issue:
WEIRD THING... If I accelerate from zero to 75 without interruption, there is no vibration. However, if I'm driving on the freeway at 60 MPH and gun it, the vibration presents itself. What is different with these two acceleration scenarios? I feel the cause is somewhere here.
If anyone can help point me in the right direction with service, I would appreciate it.
This is what I experience:
- When accelerating on the freeway between 65-75 MPH at full throttle, I feel a "rumble" wash over the car.
- When driving steady at 85+ MPH, I feel a slight vibration in my steering wheel.
Two years ago I complained again of the issue and the senior technician took extra time and care to perform a road force balance. The vibrations were still there, but significantly reduced to the point where they didn't bother me. They seem to have increased again and they bother me again.
These are the components service has replaced over the last few years to try to address the issue:
- Rear half shafts
- Four air struts
- Rear drive unit (car is RWD)
WEIRD THING... If I accelerate from zero to 75 without interruption, there is no vibration. However, if I'm driving on the freeway at 60 MPH and gun it, the vibration presents itself. What is different with these two acceleration scenarios? I feel the cause is somewhere here.
If anyone can help point me in the right direction with service, I would appreciate it.