Quote:
Originally Posted by notout86
Do you know that direct noise from the rear tyres can get into the cabin via the wheel arch. The point of entry is the lowest point of the arch at the front.
If you have the interior trim off by the rear seats you can look back towards it with a mirror or camera and see light.
For a thorough discussion see http://*************/forum/f16/poten...ill-rust-4043/ |
Quote:
Originally Posted by Porcupint
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That discussion was very helpful. Thanks for linking that. I'll be following up on both ends of that rail section. I've already had my car apart and looked down in there with much wonder as to how sound could travel down that cavity. Knowing it's actually opened to external air, I'm even more interested in sealing it and then stuffing a bunch of Thinsulate down there.
From an acoustical standpoint, sound entering from the front wheel arch would only be amplified as it bounces around in that slowly opening space. It would then travel upward towards our ears to sound like it was coming from the back wheels. Some of the sound would also be from the back - but it's just ironic that the design of the car is likely amplifying sound from both sources to make road noise far worse than it needs to be.