Vibration/resonance?
05-27-2011, 04:07 PM
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C250 sport estate
Vibration/resonance?
Hi all,
I've got a C250 CDI Sport Estate. On a coarse road surface (like tar and chippings) I get a low vibration/resonance in the car. It seems to be coming from the drivers door but it could be from anywhere - sound travels! The local dealer is co-operative and has tried to find it but with no success. The car is on 18" AMG wheels and the rear tyres are down to about 3mm. I did wonder if it's just a low profile tyre problem? Anybody got any ideas - I've tried jamming trim panels with cardboard etc, but with no luck so far.
I've got a C250 CDI Sport Estate. On a coarse road surface (like tar and chippings) I get a low vibration/resonance in the car. It seems to be coming from the drivers door but it could be from anywhere - sound travels! The local dealer is co-operative and has tried to find it but with no success. The car is on 18" AMG wheels and the rear tyres are down to about 3mm. I did wonder if it's just a low profile tyre problem? Anybody got any ideas - I've tried jamming trim panels with cardboard etc, but with no luck so far.
05-27-2011, 09:11 PM
#2
MBWorld Fanatic!
Having extremely rough local road surfaces, the noise issue was bothersome enough to investigate and take corrective measures. One was replacing the Sport/Avantgarde shocks with Luxury/Elegance, but this is impractical. After applying some of the suggestions below, the noise is far less now. But driving a new Honda Accord over the same roads, the quietness of the stock W204 is laudable.
The W204 Estate, having a far superior interior volume than the sedan/berlina/saloon, would be more susceptible to generating low frequency resonances. Plus the W204 Sport/Avantgarde is noisier than the Luxury/Elegance due to stiffer springs and shocks.
You can check your tire's tendency to be noisy by consulting www.tirerack.com
Solutions: Tires, 17" rims with quieter rubber. Treat the interior door and floor panels, and especially the rear door, floor and spare tire well with Dynamat or Fatmat. Put a thick rubber mat on the rear floor. Get a double set of floor mats.
Install better speakers and a subwoofer to mask the noise. One could be fooled that the low frequency vibrations are bass in the music. Good luck.
The W204 Estate, having a far superior interior volume than the sedan/berlina/saloon, would be more susceptible to generating low frequency resonances. Plus the W204 Sport/Avantgarde is noisier than the Luxury/Elegance due to stiffer springs and shocks.
You can check your tire's tendency to be noisy by consulting www.tirerack.com
Solutions: Tires, 17" rims with quieter rubber. Treat the interior door and floor panels, and especially the rear door, floor and spare tire well with Dynamat or Fatmat. Put a thick rubber mat on the rear floor. Get a double set of floor mats.
Install better speakers and a subwoofer to mask the noise. One could be fooled that the low frequency vibrations are bass in the music. Good luck.
