BMW 430d violent vibrations at 60+
Discussion
Hi, I’m having a issue with my Bmw which neither I or mechanics can figure out. Basically whenever the car reaches speeds over 60mph it vibrates very violently to the point you can hear all the trim pieces rattling. Whenever I let go of the accelerator the vibrations disappear completely and come back even when I press the accelerator slightly. To be specific the vibrations feel like they are coming from the rear the higher the speed the more intense it feels. I have taken it to the garage had the wheels balanced and looked over which has done nothing. I have also had the drive shaft, prop shaft and wheel bearings inspected. Visually the mechanics could not spot anything wrong. At this point I have no clue, the mechanics are going to do further investigation on the driveshaft but are unsure however. Has anyone ever had something similar or has any idea what it could be?
Edited by Igor Grekowicz on Friday 9th September 14:25
Problems like these are best solved by working methodically, one step a time, without jumping to expensive conclusions.
I would start by swapping the wheels over, front to back, both sides and see if the vibration characteristics change. This will rule out the wheel/tyre assemblies completely, in one go, without spending anything.
I would carefully think about when the fault first occured and has the vibration got worse over time. Did the vibration start after some work was done on the car?
In my fifty years as a motor mechanic, I learnt that Every Fault that appears when you've worked on the car is almost Always down to something You have done Wrong.
Next, jack each wheel and carefully observe any signs that a wheel isn't rotating precisely true. This will reveal if the problem is a wheel hub or bearing, as you've already ruled out the wheels/tyres.
Then I would inspect the prop shaft and driveshafts and if nothing visual shows up, try removing each one and inspect each joint for wear/failure.
Next, have a look at the rear suspension joints and bushes for wear, deterioation.
If the above doesn't reveal anything, let me know. I realise you state that some of the above has been checked, but I would start again and make sure in your own mind that all is good before wasting time and money.
In my experience most high speed vibrations on modern cars are down to tyres not running true or obvious wear in suspension/steering components. It will most likely be a simple single fault, not some mysterious multi-component fault.
I would start by swapping the wheels over, front to back, both sides and see if the vibration characteristics change. This will rule out the wheel/tyre assemblies completely, in one go, without spending anything.
I would carefully think about when the fault first occured and has the vibration got worse over time. Did the vibration start after some work was done on the car?
In my fifty years as a motor mechanic, I learnt that Every Fault that appears when you've worked on the car is almost Always down to something You have done Wrong.
Next, jack each wheel and carefully observe any signs that a wheel isn't rotating precisely true. This will reveal if the problem is a wheel hub or bearing, as you've already ruled out the wheels/tyres.
Then I would inspect the prop shaft and driveshafts and if nothing visual shows up, try removing each one and inspect each joint for wear/failure.
Next, have a look at the rear suspension joints and bushes for wear, deterioation.
If the above doesn't reveal anything, let me know. I realise you state that some of the above has been checked, but I would start again and make sure in your own mind that all is good before wasting time and money.
In my experience most high speed vibrations on modern cars are down to tyres not running true or obvious wear in suspension/steering components. It will most likely be a simple single fault, not some mysterious multi-component fault.
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