10-14-2016, 07:00 AM | #177 |
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I feel like the 340 is loud, but still so much quieter then the Infiniti Q50 I was driving. So relatively speaking, it's an upgrade for me, but overall still "too" loud, but right now, it's not bothering me much. I assume it will in a few weeks...
Wonder how quiet the S4 is comparable to the A4. A4 is quiet, as is A6, but different class |
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10-14-2016, 08:55 PM | #178 | |
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05-20-2017, 11:51 PM | #179 |
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Drives: 2020 m4 comp vert
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here is my road noise fix this gap is now sealed its on there with contact cement, ... my db reading is 76db at 100km per hr..
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05-21-2017, 03:16 PM | #180 |
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05-21-2017, 03:40 PM | #181 |
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05-21-2017, 06:48 PM | #182 |
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pulled tire, removed plastic shield, and installed soundproofing, placed product on gap, all openings, all holes, works excellent.. little bit of work, but worth it.. tomorrow I due the back tire wells.. lots of rear road noise getting to the inside of the cabin...
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04-07-2018, 12:28 PM | #183 |
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(My first post in this forum, but have been following this for quite a long time)
I have noticed that the F34 (3 Series GT) has additional front fender sealing. Part Numbers: 51767377913 and 51767377914 Got them ordered from Sytner Leicester for 29 including plastic rivets for my wife's 330dx (63Plate acquired in Oct 17). Drilled holes in my fender top side and fixed them. The sealing is complete albeit a bit wide, considering that the F34 fenders are a bit higher than the F30. The car feels a lot more quieter (almost like my old e39 petrol, but not like my new G30 530d). Could not find anyone doing this on the net so thought of sharing this wisdom. Other Improvements done: Allround additional door seals (door bottom - used P type; door opening sides - used D-type) Engine bay - used trunk seals over the chassis edge where the coolant container is fixed Changed to Non-runflats - all 4 to Goodyear Eagle on 17" rims. If anyone else has done anything similar please share.
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E36 318I (SOLD); E39 525I (FOR SALE); F30 330DX (CURRENT) ; G30 530D (CURRENT) Last edited by Shanta; 04-07-2018 at 12:33 PM.. |
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04-08-2018, 03:44 PM | #186 | |
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2013 F30 335i xDrive M-Sport 6MT (FBO/BM3 custom tune by HCP, 91 oct, 550i clutch, xDelete)
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04-08-2018, 03:46 PM | #187 | |
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2013 F30 335i xDrive M-Sport 6MT (FBO/BM3 custom tune by HCP, 91 oct, 550i clutch, xDelete)
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04-09-2018, 07:02 PM | #188 |
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ok, today i measured the db with an app, and the readings were between 84 to 86 inside the car at idling. Probably a placebo effect, but i could swear it reduced the diesel clatter and sounded much more decent than before.
Nevertheless, here are the pics of the engine bay fender seals on my 330 diesel Billfitz I see you do drive a petrol (Gasoline) engine, and i would tend to agree that those engines are by far the quietest unlike my 6-pot diesel
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E36 318I (SOLD); E39 525I (FOR SALE); F30 330DX (CURRENT) ; G30 530D (CURRENT) |
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04-09-2018, 07:54 PM | #189 | |
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04-13-2018, 09:14 AM | #190 |
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340i-my driver side window was making whistling noises, most noticeable when sunroof is cracked/vented. So I figured I need to to something about it, by adjusting all four latches. No more noises, seems quieter. Just have to give the doors more effort when closing them, louder thud!
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05-12-2019, 08:31 PM | #192 |
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09-21-2019, 09:28 AM | #193 | |
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09-21-2019, 10:02 AM | #194 |
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11-03-2019, 12:57 PM | #196 |
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RFTs are huge contributors to noise in modern cars. Just bought my wife a GLC and that thing is vault quiet except for tire noise.
Now, you want REAL road noise, try the 2020 Hyundai Aceent rental I just had while away on business. Not only was it road noisy, it had the noisiest windshield wiper system I've ever heard on a post 2000 car. Somebody got cheap leaving out the rubber isolating mounts, I suppose. |
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11-16-2019, 01:30 PM | #197 |
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X1
So I can see that f30 has the same problem as my X1 (2011).
So I have to put: The insulation hood cover, I have sealed all door (I have put the sound deadening self-adhesive pads on the door metal all 4) I have put extra door seals on all doors, hood, and trunk And this reduced noise for 10dB, measuring before and after on the same phone and same conditions. My next project is: To close the gap between doors and fenders well To remove wheel well plastic cover and put the same self-adhesive pads on them and then put them back (all 4) To close long gaps in the hood My whole next project will be almost everything that I have seen on this forum. A lot of informations, thank you a lot. I will do dB measurements and I will post them here |
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11-16-2019, 07:38 PM | #198 | ||
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