road noise

Kei7h

Member
hi to all.....hope the xmas hols have been kind to you all
quick question, has any one used sound proofing, in the form of dynamat or similar, on the boot floor, and inner wheel arches, and what sort of results did it return?
 
lol, i do when im on my own, but unfortunately the better half expects us to hold a "conversation" when shes riding shotgun! :rofl:
 
Kei7h said:
lol, i do when im on my own, but unfortunately the better half expects us to hold a "conversation" when shes riding shotgun! :rofl:

Screw that. My other half isn't keen on the stereo being on, that's said he doesn't want to have a conversation either so I win and put it on :thumbsup: makes up for all the times he drives his car with the window down even on the coldest of days.
 
Angie4m said:
Kei7h said:
lol, i do when im on my own, but unfortunately the better half expects us to hold a "conversation" when shes riding shotgun! :rofl:

Screw that. My other half isn't keen on the stereo being on, that's said he doesn't want to have a conversation either so I win and put it on :thumbsup: makes up for all the times he drives his car with the window down even on the coldest of days.
well its good to have some fresh air, especially after the xmas sprouts (another thing the mrs insists on :rofl: )
 
Run flats? They are noisy. Almost any non-RFT will be a big improvement, but then you are basically sitting on the rear axle!

Not sure about sound proofing. I would have thought it was pointless with such a small air gap to play with, but there's a tiny rubber bung in the roof drain which makes a small but noticeable difference when it's pulled out, so you could be onto something.

Please do experiment and post back results. :thumbsup: :D
 
Kei7h said:
Angie4m said:
Kei7h said:
lol, i do when im on my own, but unfortunately the better half expects us to hold a "conversation" when shes riding shotgun! :rofl:

Screw that. My other half isn't keen on the stereo being on, that's said he doesn't want to have a conversation either so I win and put it on :thumbsup: makes up for all the times he drives his car with the window down even on the coldest of days.
well its good to have some fresh air, especially after the xmas sprouts (another thing the mrs insists on :rofl: )

:rofl: :rofl: :rofl: :rofl:

In regards to using Dynamite for sound proofing, if you look at the wheel arch liners (front ones are easiest as you can see the outside of them from the engine bay) they're simply screwed directly to the car with no sound insulation at all, I doubt it would be too difficult a job to remove them, insulate the outside with Dynamite or the likes and replace them afterwards :thumbsup:
 
i tend to think most of the noise is coming from the boot area.
i am on run flats at the minute, but will be putting a old set of wheels on later today, just a old set of M6 reps from a previous e46, the wheels themselves are a bit rough, but decent falcon tyres on them so will probably use them through the winter, now the snow is here :!: while i have my originals refurbed.
i have some dynamat left from doing the front doors, so will try this, and report back.
as a carpet fitter, i have access to different types of underlay, rubber, felt etc and was thinking of removing the boot carpets and lining it out, before refitting them.
 
I'd like to reduce this on my e89 but I fear the job is likely too much work to get a really good result. Most of my noise is from the rear wheels, given you sit right against them. Even with non run flats, motorway journeys on all but the best tarmac are quite loud compared to a saloon etc.
 
im not familiar with the e89, but it looks a fairly easy job in my e85, although being a contortionist would probably make it easier! .....
im not sure as to what type of underlay to use, i remember a lot of my older cars used a felt type, but i presume things have moved on since the late 80's.
 
just back from my 1st trip without the run flats........ OMG......what a difference, not so much in the noise stakes, but in the firmness of the ride, it seems a little quieter although not been on motorways yet. (i do a fair bitof motorway driving, hence looking to make the old girl a bit quieter, the car that is, not the Mrs!
 
Yep been on the same wave length of wot to do! however, the other day I put my jacket in back where the hood drops into, (ie behind the hoops and on the plastic tray) the noise reduced considerably next time use two thick coats!
I have concluded the tyre/road noise transfers thro' the boot and into the cab via that plastic tray and yes either sticking sound proofing everywhere under the carpets or somehow sealing off the tray from the boot side would be the starting point - Oh to remove the tray isn't a five minute job - see how to remove on the forum when changing rear shocks.
There are loads of sound deadening materials on Ebay for you info. I'm still thinking about it and what to do, but having 18" wheels doesn't help; 17 or 16" would be solve half the problem along with softer springs. or maybe drive my Vectra Est...ops sorry!
And I did throw the RF away within two weeks of buying my Zed.

Mick G, Blue Zed, not Silver or Black.
 
MickG said:
Yep been on the same wave length of wot to do! however, the other day I put my jacket in back where the hood drops into, (ie behind the hoops and on the plastic tray) the noise reduced considerably next time use two thick coats!
I have concluded the tyre/road noise transfers thro' the boot and into the cab via that plastic tray and yes either sticking sound proofing everywhere under the carpets or somehow sealing off the tray from the boot side would be the starting point - Oh to remove the tray isn't a five minute job - see how to remove on the forum when changing rear shocks.
There are loads of sound deadening materials on Ebay for you info. I'm still thinking about it and what to do, but having 18" wheels doesn't help; 17 or 16" would be solve half the problem along with softer springs. or maybe drive my Vectra Est...ops sorry!
And I did throw the RF away within two weeks of buying my Zed.

Mick G, Blue Zed, not Silver or Black.

If that's the case maybe some closed cell foam on the top of the tray. Lets be honest its not exactly visible so black foam neatly fitted vs dusty plastic shelf might be an improvement. Something like this maybe: http://www.deadening.co.uk/products/dynamat-dynaliner-1-2

* Get one without the logo though
 
I've just notice or was it obvious that the roof was up when experimenting, and yes that's the product(s) however, it maybe an idea to stuff something in the void area both sides above the shock mounts which would also reduce the 'noise coming thro' the sides of the tray, then line the underside. also some on the inside? but, need to check the clearance between the hood and the tray when folded back. From a designers brain (I once may have been) why they even have that stupid adjustable tray, does anyone wind it up then get out to lower it before they fold the roof away! I think not. Should have been a sealed area which would have given you access to the shock mounts!
Anyway; to bloody cold and wet today to even look. gives me time to think. - arrh yes; maybe not; um. What happen to 'back to the drawing board' before the drawing board was invented.

Mick G
 
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