I've done rear door, sliding doors, front doors, roof and bonnet. Alot quieter nowT:

 

I had the front doors silent coated when having speakers fitted, just that made a difference.

 

Is the T5.1 worse than the T5? Heard a lot of complaints about road noise recently.

Our Cali has more insulation than an elephant seal so it's pretty quiet inside but that 2.0 four pot engine doesn't make a pretty noise from the outside.

 

Is the T5.1 worse than the T5? Heard a lot of complaints about road noise recently. Our Cali has more insulation than an elephant seal so it's pretty quiet inside but that 2.0 four pot engine doesn't make a pretty noise from the outside.

Hi. I have a T5.1 60 plate Caravelle. Road noise is loud and the ride hard and bumpy. Don’t want to sell cause it’s a 2 owner with 30k on the clock. any ideas on making quieter. Is it insulate doors and all panels incl floor so carpet up etc ? Thank you

 

You would think we have no bed to go to up posting at this time
Hard to say ,I know before i did any Dynamating it was shocking
Yes is noiser than my last T5 kombi but then i now have lowered springs and wider tyres
Would think these dont help
Just the Caddy Maxi i had there was very quite
Looks like have to get more dynamat done ,I do long trips 4 hours none stop the noise gets to you after a while

 

What tyres are you using ?

 

Do you have the under engine tray with the sound deadening mat? we found it reduced the noise quite a bit T:

 

Do you have any -
Part numbers
Costs
Pictures

Of the parts you have fitted
Any idea if they would be the same parts for a facelift van?
Is the deadening mat fitted to the under tray or is it one that goes on the underside of the bonnet ?

Cheers

Phil

 

I did the rear arches, all rear panels and roof with barrier mat and class O 25mm foam on our last van.
Quieter but not quiet enough in my opinion. Even with Caravelle conversion, Altro floor and total carpet job (even door metalwork).
The cab seemed incredibly noisy after doing the back.
This time I'm trying Silent Coat. Stripped the entire interior and covering the lot!
Front and rear arches, bulkhead, entire roof (inc cab), all doors, floor, all lower panels (windows all round).
Massively expensive but I'll do the iPhone Db app and let y'all know if it works. T:

 

...that might be a good thread, "what is the db level in your van" ...tested at say 70mph on a motorway then we would all be able to compare solutions......We have a windows phone so I will see if there is an app for that.....T:

 

dB level in your van. Good idea it was the noisest van that I've had. I'm going to measure mine next week.

 

I found the carpeting/insulation out back helped alot (I also flashbanded all panels inc roof)

I then pulled the dash apart and packed bottle insulation in all the holes that helped, then flashbanded the front floor.

Still doors to do and i'm replacing my altro flooring out back as I think that makes alot of noise, but its never going to be amazongly quiet!

 

My new T5 4motion was registering 87dB on the M6 at 75mph, after soundproofing at Classic Acoustics (all rear done and front roof) it now reads 78dB. Happy with that, but next step is decent ICE set up which will mean front doors get done, so should be a further reduction there too.

 

Thats a big big change ,
i think a 3 or 4 change in DBs is the same as near doubleing noise
So A 10 DBs improvement is a lot T:
Pitty VW dont offer better options for this problem and it seems a problem
Its ok short trips its the long Motorway trips thats get you (and poor UK roads !!!)
We should do a Noisey road thread list them
Hankook Tyres Swiss
Looks it i want a improvement just have to get stuck in more Dynamat

 

Have you got a proper bulkhead fitted? I stumped up and bought a Motexion one, Its probably the best way to cut down noise on a T5..

 

Then the most of the noise is rear related ( easyier to sort then )

 

Its not the tyres then.
Ben you have a 180 right?
Normally they come on 17 inch and these are normally Goodyear.
First thing I would check is they are van tyres not 4x4 tyres
if they are changed as 4x4 tyres can throw noise up

 

Its just sportine tyres and lowered springs and the fact that the caddy was so quite
As i say just have to get stuck in dynamat bit more Swiss

 

Measured sound the other day on the motorway at 70mph I had an average reading of 73dB on A weighting. I thought my wife's megane was quieter but we went to legoland and I measured it and had an average of 85dB did seem quieter before I added sound proofing, Hers has a lower frequency of sound where as mines higher.
Mine's in VW for paint work issues atm and they have kindly lent me a new sportline kombi, I can't believe how noisy it is no. I'm going to measure it tomorrow on the motorway.

 

There you go told up new 5.1 is not quite

 

Whilst I was waiting I was opening doors in the showroom the amarok door shut with a nice thud, the caddy not too bat & the transporter with a clang! I did get a funny look from one of the sales guys a I said what I was doing he replied the thing is it's a van

 

All very interesting ,All i know i do long runs at M Way speeds and its giveing me a sore head
With the road noise , Totaly fed up hard to even have a chat with anyone in Van and hands free phone is a no go:*
Is dynamat best anything cheaper need to do roof as well i think ??

 

Silent coat is cheaper, that along with caravelle/multivan door cards helps keep noise down, and it sounds just like a golf when you shut the door!I:

 

Also really happy with Silent Coat.T:

 

Measured the sound level in the sportline kombi today same motorway same point to point junction at the same 70mph with an of average 81dB that's 8dB louder than mine and I haven't finished with it yet.

 

Just done the db meter on mine and at 70 its 34db and when the indicators go on its 38db

 

34dB what did you measure it with? That's really low are you sure as 40dB is a Stream, refrigerator humming.

 

Try it with an accurate sound meter you might find you'll have a higher reading as 60dB is equivilant to a conversation at 1mT:

 

But I can have a normal conversation with the passenger at 70mph without shouting. If a proper meter is available then by all means I will use it but not going out to buy one as won't ever use it again.

 

Test drove my prospective purchase today.(09 plate 2.5 auto)
Even though it had a full bulkhead,I couldn't believe how noisy it was inside,seem to be coming from the front wheels,tyres are normal Bridgestone van tyres about half worn.
After 20 min driving I got a headache,even tried turning up the standard fit stereo but it sounded rubbish !!!
Was so glad to get back into my own work van (Merc Sprinter 316 auto) so much quiter and a far better sounding stereo.
Will have a drive of the other 2 identical spec vehicles to see if they are the same

 

Commercial tyres ? These can be a big part of it .

 

knackered wheel bearing perhaps? when i replaced my rears it made a world of difference to the interior road noise. its the most single positive change ive ever done to my van.