12 minutes ago, Steviedakota said:

 

Well described, I know exactly what you mean, cheers. 

 

There's my weekend job sorted!  Did you apply silent coat, closed cell or both?

 

Just silent coat. There is not enough room between the seat-belt mechanism and trim for comfort. I was concerned about binding, although not hard to fix. But because this is my wife's car.... you don't want to cause problems! Just fix them

 

I do recommend finding some high density foam for the sills and B pillar cavity. Head down to your local rubber-shop and grab some 5 cm thick seat padding. Something you can scrunch up and stuff

 

 

This both damps/braces the metal around it and also absorbs internal sound bouncing around. Tap the sills mid-door and you will know what I mean.

 

Also rap the B pillar trim with a knuckle before you start, you will also see how cavernous it is in there. 

 

How effective was it? My wife who was not paying close attention, noted that she could now hear wind noise and noise through the window, that was not as noticeable before the fix

Edited 20 May, 20197 yr by digifish

So have just finished soundproofing both B pillars.

 

Not a hard job but made a couple of small mistakes that I had to rectify.

 

First off remove the airbag plastic cover, I used a knife, as described earlier prize from the middle. One of the tabs broke off as I removed it but it still went back on ok.

 

Then removed the T20 screw being very careful not to drop it into the b pillar. Magnetic tool is a must.then pulled the trim of firmly from the to lower tabs and slid the top b pillar trim down. The bottom trim pulled off easily as well.

 

Then went to work with the silent coat on both the b-pillar and the inside of the trim, also added some closed cell insulation to the b pillar trim. Careful not to make it too thick as it may interfere with the running of the seat belt. Each side of the seat belt mechanism there are voids into the sill. I stuffed these full of closed-cell to act as a buffer for any noise travelling up the B pillar. 

 

Once fully insulated I fitted the lower trim, and now made my mistake fitting the upper trim. I fitted everything back replaced the T20 screw, only to realise I had not lined up the adjustable seat belt height mechanism, so the seat belt will not retract. Removed the trim again, lined up the mechanism and refitted and everything was ok. Very easy to make this mistake so be careful. Also be careful with that T20, it would be very easy to drop it into the b-pillar and you may never see it again.

 

Each side took around 40 minutes, I would class this as an easy job. Now for a drive to see does it make any difference.

These are the two areas I packed with closed cell to block any noise traveling along the hollow sills.

 

Nice summary. Very similar to my experience, including broken clip, I did forget to say I attached the top trim and realised the seat-belt buckle was inside the pillar

 

I did price up genuine replacements seem to be about 10 USD. Knockoffs from Ali Express 4 USD.

Edited 21 May, 20197 yr by digifish

2 hours ago, Steviedakota said:

Also be careful with that T20, it would be very easy to drop it into the b-pillar and you may never see it again.

 

Nerve-racking moment eh! I was shaking

 

If I was game enough I would try a long hose and some spray foam in the sills. But knowing my luck it would squirt out somewhere into the carpet

Edited 21 May, 20197 yr by digifish

14 minutes ago, digifish said:

If I was game enough I would try a long hose and some spray foam in the sills. But knowing my luck it would squirt out somewhere into the carpet

 

Thought about that too but might run he risk of moisture build up/rust if no ventilation, and if body work was ever needed could be a problem.

Check these noise insulation solutions... Much more foam and stuff

Inspiration ...

 

 

 

^ Impressive!

8 hours ago, Steviedakota said:

^ Impressive!

 

Now I just need that team of guys here

 

BTW I am looking for 235/45R18 super quiet tyres. The Continental SportContact 5, are a big part of the problem here. Time to spend some bigger bucks solving this issue.

17 minutes ago, digifish said:

 

Now I just need that team of guys here

 

BTW I am looking for 235/45R18 super quiet tyres. The Continental SportContact 5, are a big part of the problem here. Time to spend some bigger bucks solving this issue.

I have for winter BF Goodrich g-Force Winter 2 235/45/r18 supposedly 69db - they do feel very quiet until you start accelerating
for summer I bought Goodyear Eagle F1 Asymetric 3 which should have 69db too, but for some reason I think they're pretty loud. It is possible that the tyre shop put on 94W which are 71db. I have to check actually I just didn't consider that until now... Like u can hear them all the time while winter were pretty quiet until some speed. In general I some how feel my car is really loud with noise insulation almost every where except car floor. I felt Golf GTI 2006 is quieter... 

 

I'm generally unhappy with noise in my car, specially because I can hear wind noise on right rear doors somewhere around window at top but I checked every damn thing and it seems to seal well and no rubber is damaged or anything like that. I also checked alignment of doors (because I had really bad issues from factory because of that, like driver's doors didn't even seal.... it was like having open window all the time)... I dunno. I'm actually lately thinking to waste money and buy A6 instead (used ofc). 

I also have noise coming from rear left headlight, yeah.... Weird... It seems like the mounting plastic was broken and the light is moving bit up down on holes. It may even been hit from some object (there is small damage on the light outside) but insurance company won't cover that... And I'm not paying 200€+ for that crap... I also have very loud suspension, some is bushings which were replaced twice now and some is idk what, I can actually hear every hole inside the cabin, like the suspension is not doing its job correctly. In friends A4 u can't hear any potholes or anything like that inside his car. No idea really truly noise wise this car is pain in my ass... Ow didn't mention I also have noisy glovebox (fixed by adding additional rubber to make it more "stable" and some  thing behind glovebox or inside dashboard, not sure... Noises after noises. I fix one 2 appear... So tired... Middle console where you rest your hands, also plastic is still not quiet after adding various materials and even spraying silicone spray....

11 hours ago, digifish said:

 

Now I just need that team of guys here

 

BTW I am looking for 235/45R18 super quiet tyres. The Continental SportContact 5, are a big part of the problem here. Time to spend some bigger bucks solving this issue.

 

Big thumbs up for these, replaced Turanzas with these on my Passat and made a HUGE difference. 68db.

 

https://www.tyreleader.ie/car-tyres/fulda/sportcontrol-2/235-45-r18-98y-569861

 

https://www.eiretyres.com/product/Fulda/45/18/R-340783

 

 

Edited 24 May, 20197 yr by Steviedakota

14 hours ago, digifish said:

 

Now I just need that team of guys here

 

BTW I am looking for 235/45R18 super quiet tyres. The Continental SportContact 5, are a big part of the problem here. Time to spend some bigger bucks solving this issue.

 

(As you and I live in Australia) - In the EU, they use tyre labelling; https://www.blackcircles.com/helpcentre/tyre_labels/what-is-tyre-labelling

 

One key area regarding this post must be regarding the noise of the tyres.

 

If your OEM tyres are ContiSeal, then they are 71dB and if not ContiSeal they are 72dB.

Have a look at Goodyear / Dunlop tyres as they are around 68dB - 69dB.

I have just purchased new tyres for mine (yet to put on though) and they are 245/40R19 Goodyear Eagle F1 Asymmetric 3 98Y XL (69dB) - my original Pirelli P7 are 72dB.

So a 3dB saving right there for me!!!

 

1 hour ago, ope126 said:

 

(As you and I live in Australia) - In the EU, they use tyre labelling; https://www.blackcircles.com/helpcentre/tyre_labels/what-is-tyre-labelling

 

One key area regarding this post must be regarding the noise of the tyres.

 

If your OEM tyres are ContiSeal, then they are 71dB and if not ContiSeal they are 72dB.

Have a look at Goodyear / Dunlop tyres as they are around 68dB - 69dB.

I have just purchased new tyres for mine (yet to put on though) and they are 245/40R19 Goodyear Eagle F1 Asymmetric 3 98Y XL (69dB) - my original Pirelli P7 are 72dB.

So a 3dB saving right there for me!!!

 

Um one question, the 245 did you have to do any special things to put them on? Like change wheels? I wonder cause 245/45R18 are 80-120€ (total with 4 tyres) cheaper than 235/45R18 and I wanted to buy them but the size isn't "official" anywhere so

A little update, I can't edit previous post so I have to post again. So I basically filled whole B pillars with foam meant for seats and stuff like that (took @digifish's advice) where ever I could squash it in. And the result is fantastic. Road noise seems to have reduced a lot!!! Maybe its short term thing and only in my head so I will give it a few more days to sattle in 😛 but first impressions are huge difference... These pillars look really bad idea from Skoda. Like truly it vibrates like hell and its soo thin... On Audi's u if you knock on the pillars u don't hear any "noise" it feels like its filled with something. Interesting truly.

I still haven't found out why I can hear the air coming in on right back doors.... I tried setting doors again and its no use, maybe I have to adjust them at the door hinges, truly no idea. But its just 1 door... I've had issues with air inside cabin since I bought the car, but I was able to properly set most doors except the damn rear right... Its soo annoying specially now after all noise insulation. That's source of most noise now! Maybe going to try dealer, but in past they were really useless regarding doors (my left back doors have like 1cm clearance and right ones 0.4mm... Truly visible... And they say its normal... 

2 hours ago, JackySi said:

A little update, I can't edit previous post so I have to post again. So I basically filled whole B pillars with foam meant for seats and stuff like that (took @digifish's advice) where ever I could squash it in. And the result is fantastic. Road noise seems to have reduced a lot!!! 

 

You can see here from this factory image (octavia but same basic design, a backing panel is sandwiched over this) the sills and B pillar make a hollow upsidedown T. The sills are like tubes sucking up all the road noise from the tyres and feeding it into the B pillar. 

 

 

 

If you tap the sills you can hear they are hollow and resonant. I don't understand why they allowed air conduction from the sills into the B pillar.

Edited 25 May, 20197 yr by digifish

7 hours ago, digifish said:

 

You can see here from this factory image (octavia but same basic design, a backing panel is sandwiched over this) the sills and B pillar make a hollow upsidedown T. The sills are like tubes sucking up all the road noise from the tyres and feeding it into the B pillar. 

 

 

 

If you tap the sills you can hear they are hollow and resonant. I don't understand why they allowed air conduction from the sills into the B pillar.

I'm guessing road noise and general noise in the car also matters based on price u pay, so I'm sure VW has some instructions for Skoda how to build certain things. I'm sure price of build process is not that big of an issue... With some things in this car I truly got that feeling... Skoda is still cheap and affordable car compared to VW/Audi so I think that's the biggest reason we don't get as good insulation and obviously older and worse tech (not all of course). I know for a fact that SLA on my car doesn't work as nearly as good as matrix headlights and I blame camera a lot there. Any way, I also noticed that friend's A4 noise from outside the car (engine noise) is also lower and deeper than Superbs so I'm sure there is something to it too  

Hello again,

 

after many months of sporadic work I now have a silent car.

I put in numerous coats of STP on:

- the engine bonet

- the trunk floor

- the wheel arches from the outside

- the B pillars

- the doors

Additionaly I added braces under the car (https://www.hardrace-europe.com/fitments-3/skoda-1/superb/3rd-b8-3v-2016-present.html) and a front strut bar.

I now like my car. It is really quiet, it has no vibration regardless of the road surface, the turn in is so direct and the whole car feels like one single unit. It really feels like an Audi.

The effect is astonishing at High speed. Only noise comes from the mirrors - double-glazed Windows would surely make the car excepțional but I can’t find them anywhere. It is however a rather benign sound.

All the added balast has made the car feel like a little “elephant” but it does not bother my relaxed driving style and is rather appropiate for highway motoring (it’s the familly car you know).

What’s next?  Well the car is now a rattle and creack concerto.

Anybody silenced the center console, between the front seats? It drives me crazy!!!

Edited 2 June, 20197 yr by gigolea

Forgot to mention that I replaced the Pirelli P7 garbage tires with 68dB Dunlop’s.

8 hours ago, gigolea said:

Hello again,

 

after many months of sporadic work I now have a silent car.

I put in numerous coats of STP on:

- the engine bonet

- the trunk floor

- the wheel arches from the outside

- the B pillars

- the doors

Additionaly I added braces under the car (https://www.hardrace-europe.com/fitments-3/skoda-1/superb/3rd-b8-3v-2016-present.html) and a front strut bar.

I now like my car. It is really quiet, it has no vibration regardless of the road surface, the turn in is so direct and the whole car feels like one single unit. It really feels like an Audi.

The effect is astonishing at High speed. Only noise comes from the mirrors - double-glazed Windows would surely make the car excepțional but I can’t find them anywhere. It is however a rather benign sound.

All the added balast has made the car feel like a little “elephant” but it does not bother my relaxed driving style and is rather appropiate for highway motoring (it’s the familly car you know).

What’s next?  Well the car is now a rattle and creack concerto.

Anybody silenced the center console, between the front seats? It drives me crazy!!!

A struct bar on Superb? 😮 what's that about

@JackySi

https://www.hardrace-europe.com/front-strut-bar-8949.html

similar to

https://www.drive2.ru/l/531456917818573860/

https://www.drive2.ru/l/531454993673224675/

3 hours ago, JackySi said:

A struct bar on Superb? 😮 what's that about

Why not a strut bar?

3 hours ago, JackySi said:

A struct bar on Superb? 😮 what's that about

Why not a strut bar?

Forgotten about the door seal

 

 

Edited 3 June, 20197 yr by gigolea