BenzWorld Junior Member
Date registered: Mar 2009
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JJ -- Earlier today I performed step 1 of my little experimentation process. And that was to make liberal use of the Mequiar's #40 vinyl & rubber cleaner/conditioner/protectant. This is the first time the weatherstripping / seals have had anything done to them. Other than looking grimey they looked surprisingly good.
It's pretty chilly here in Boise right now, mid-30s, and I just took the car out for a spin to a place where the noise has been particularly annoying. The Meguiar's treatment is still very fresh, so the benefits may soon evaporate (literally), but the obnoxious sounds from the soft top are now much, much less. Not yet totally gone, but if I had to put a number on it I'd estimate at least a 90% improvement.
Tomorrow I will move on to step 2, and that will be to open a tube of silicone lubricant and try appling a thin film at all the major points I can find where the weather stripping joints come together. I'm guessing the silicone film will do a more effective job of reducing noise while also lasting longer than the Meguiar's liquid treatment. BTW, I was surprised when I saw just how large those weather strip joint surface areas are, and how many there are.
I agree with you that a cabriolet will not (cannot) be as quiet as a coupe, but based on the results from step 1 I am now hopeful that it will get back to like what it was when new. I sure hope so because the noise, which is more like nasty squeaks and sharp chirps rather than rattles, has been really bugging me.