F10 vibrating when breaking and reaching speeds faster than 120km?

[BM520D]

In short, the vehicle started vibrating after swopping the rear tyres to the front. I then swopped the tyres back, and vibrating remained, Dealership encouraged me to replace my rear shocks, (189k) on the clock. Did so, vibration remains when breaking and reaching speeds faster than 120km?

My breaks have also been replaced.

Any advice would be nice.

 

[lebofa]

normally when the car vibrates when applying breaks, the disks are bent and needs replacing or skimming. I would do which ever is cheaper to isolate the issue. If it happens that skimming fixes the issue, atleast you know that you need to get new break disks in due course. If the car vibrates at 120km when breaks are not applied, it can be many things from wheel bearings, bent rims, flat spots on your tires, to think of a few. Take the wheels to Tiger wheels and tire and balance them, they will tell you if they are bent and can quote you to straighten them. But once straightened, you might need new sets of tires. Do small and cheap things first to isolate or fault find. It is bad that you have already spent on shocks.
When you say breaks have been replaced, do you mean break pads and disks? of just pads?

 

[BM520D]

normally when the car vibrates when applying breaks, the disks are bent and needs replacing or skimming. I would do which ever is cheaper to isolate the issue. If it happens that skimming fixes the issue, atleast you know that you need to get new break disks in due course. If the car vibrates at 120km when breaks are not applied, it can be many things from wheel bearings, bent rims, flat spots on your tires, to think of a few. Take the wheels to Tiger wheels and tire and balance them, they will tell you if they are bent and can quote you to straighten them. But once straightened, you might need new sets of tires. Do small and cheap things first to isolate or fault find. It is bad that you have already spent on shocks.
When you say breaks have been replaced, do you mean break pads and disks? of just pads?

Thank you for responding. I will look into all those options starting with the rear tyres which need replacing now. My thinking is that it's a flat spot on one of the wheels. I've had the bearings, and rims checked including the balancing and alignment and it's 100% according to the dealer.
If that does not resolve then a will relook into the brake pads. I did have the pads replaced earlier this year and the disks were slightly skimmed during the replacement. I still need to replace the front left shock, BMW replaced the right front a few months back from an insurance claim. I hit a 1-meter wide 30cm deep pothole at speed, instantly burst the run flight tyre and cause internal damage - all parts were replaced at 30k by insurance.

 

[General.Massacre]

check your front Thrust arms on the subframe to the hub.
Its a common issue where they get overly worn, and cause vibration when braking at higher speeds due to the play as it connects directly to the hub.
Will be the one furthest in the front of the subframe, and linked from a Bush in the subframe to the Knuckle via a ball joint.

Can take the car to a SupaQuik/HiQ/TWT etc for them to inspect the Control arms and have them tested for excessive wear.

Good luck.

 

[azcoza]

normally when the car vibrates when applying breaks, the disks are bent and needs replacing or skimming. I would do which ever is cheaper to isolate the issue. If it happens that skimming fixes the issue, atleast you know that you need to get new break disks in due course. If the car vibrates at 120km when breaks are not applied, it can be many things from wheel bearings, bent rims, flat spots on your tires, to think of a few. Take the wheels to Tiger wheels and tire and balance them, they will tell you if they are bent and can quote you to straighten them. But once straightened, you might need new sets of tires. Do small and cheap things first to isolate or fault find. It is bad that you have already spent on shocks.
When you say breaks have been replaced, do you mean break pads and disks? of just pads?

Should the all disks be checked or only the front in a case like this, could the back disks be causing this

 

[AshG108]

In short, the vehicle started vibrating after swopping the rear tyres to the front. I then swopped the tyres back, and vibrating remained, Dealership encouraged me to replace my rear shocks, (189k) on the clock. Did so, vibration remains when breaking and reaching speeds faster than 120km?

My breaks have also been replaced.

Any advice would be nice.

Hey bud,

Firstly, does your car have a square setup with the tyres that you were swopping them back to front? If not, wides in front could have touched and set something off.

Secondly, when the swop was being done, did you inspect the suspension components ON YOUR OWN? This will give you peace of mind of everything being find, I have a habit of doing this when the car goes in for work in general when they take of the tyres and the car is ramped.

then when they are doing balancing, please make sure for the next 5 days at least that the weights applied are still on the rim. recently, I have found many time that the weights put onto my rims came of on all 4 of my cars...not sure why but most of the time this happens and is evident at 120-ish speed.
The tyre can have flat spots but then do you remember either having the car sits for a long time without driving it, tyres been in extreme temp changes OR you have applied hard braing within the recent time frame?

Your control arms can be worn but will have tell tale signs like creaking or knocking, floaty steering wheel uneven alignment etc.
Also check your Tie-rods and/or the wheel bearings depending on your mileage and where the car is driven.

 

[osiris]

I had this issue, like to the T...it was warped front discs for me.