Hi there
So last night I drove home with both windows fully open, yes in the freezing dry cold but I was just enjoying listening to that incredible sound track of V8 and Corsa exhaust. But then I kept hearing a squeak/creak, I got closer home where roads are rather bumpy/uneven with a wall in close proximity and my car was sounding like an old banger, creaking like crazy over minor road imperfections, not even holes or bumps. This was my feeling
!!!!
Luckily I had booked in at local garage the following morning to re-check all bolts after the damper/spring install just to check all was tight.
So this morning I drove to the garage with both windows fully down to listen for this noise, really upsetting to hear my brand new car creaking/squeaking like an old banger over any kind of rough road surface, ripple, bump or hole (Windows closed the noise was not audible).
Anyway I was able to 100% pinpoint it as coming from the rear and more from UK passenger (left) side rather than right side though there did also seem to be some squeak/creaks from right side as well. Applying brakes or hand brake had no impact on the noise, so it was definetely a moving suspension component and most likely a bush.
So I arrived at the garage and ask them to listen as I drove on and off their ramp, thankfully it made the noise every time, they said this is 100% a bush and not from the damper and spring install they did last week.
At this point I was pretty much 100% certain it was the BMR Delrin/Spherical vertical links, I thought it might be these and as such I put my stock items in the trunk (boot in UK).
So the first thing we did, jack car up, let it down fast and low and behold the creak noise happened. I told the garage to undo the bolt on the lower vertical link, the delrin bush. We did this on left side, noise gone but a slight nose from right side, did it on the other side and noise completely gone.
So we removed the BMR vertical links and were rather shocked at what we saw:
This vertical link has being on the car for no more than 500 miles and about 2-3 weeks, yet it is already dry in areas and is coming apart. It is 100% the reason for the creaking/squeaking noise.
The spherical bearings at the top of the BMR link are absolutely fine, no noise and no signs of wear.
I hope Kelly from BMR can sort me out with some spherical bearings for my BMR vertical links as I was sold these as being NVH free and well they clearly are not.
This won't just effect BMR either, it is simply a case of Delrin bushes on the vertical links are a very bad idea on a car daily driven in all conditions, they will make noise and they will fail judging by how they are coming apart so young into their life.
BMR make great kit and Kelly has being superb so hoping he can sort me out a spherical bush for my link and my advice to anyone else buying vertical links DO MAKE SURE THEY ARE SPHERICAL AT BOTH ENDS.
Those who have delrin vertical links, drive around on rough roads with both your windows fully down, see if your car sounds like an old creaking boat.
P.S. With the stock links installed the car is now completely silent both inside and outside.