Im very pleased with my L&K 2009 octy but its a bit noisy on the motorways. It appears to be tyre roar on bad stretches.Its quieter on the very rare very smooth surfaces

It could be the tyres but Im asking if there are any aftermarket felt type noise damping kits avaiable?

Any Suggestions?

Earplugs?

Ooh, turn the stereo up.

Sorry,cant hear you!

Perhaps a more helpful suggestion might come across better

tyres are the best place to look first some makes of tyres are very noisy have a look online most are marked now.

bill

Sound insulation can help things - I'd start with the area under the boot floor and in the spare wheel well, then also do under the rear seat.

These areas are quite accessible and easy enough to apply the insulation to.

You could also look at doing the inside of all doors, although that is a bit more involved.

Example product: http://www.ebay.co.uk/itm/290725317259

Can't remember what the thread was called but someone on here (Ryan?) used a noisekiller kit. Seemed to give positive results.

http://www.noisekiller.co.uk/vehicle_soundproofing_products.asp

Yep, heard good things about the Noisekiller kits. Around £200 I understand for the whole car kit, although you can just buy certain bits.

It was me.

I've not used it but a friend had used it in his alfa 147 and made it quieter by 6db.

He used deadening and a mass loaded vinyl over the entire floor area.

To get good results you have to spend a fortune, more than a new set of tyres thats for sure.

You could start on problem areas like the boot floor and arches but deadening products will not do anything alone. You will need a noise barrier aswell/instead

What do you have for wheels/tyres?

Is it 225 45 17?

If so then going down in wheel size and up in profile should help.

205 55 16 or even 195 65 15.

The race towards ever larger wheels and ever lower sidewalls on ordinary family cars seems to be slowing up, perhaps folk got fed up of the noise and harshness. Aware there are other reasons you might want to stick with the big wheels and low profiles.

Its the tyres, some are hard compound and some are soft compound,igot 070 bridgestones on a scooby and they are very noisy because of the hardened side walls

Road noise is also a symptom of incorrect wheel alignment as well (the well known issue, mainly rear wheels cause the noise).

It's not the tyres on the Octavia that causes the pronounced road noise.

I run the same brand and size tyres as my other halfs car and the Octavia is a much noiser place to be.

The large boot area and lack of sound insulation is the Octavias main problems concerning noise.

Change your tyres if you feel like it but it won't cure the issue, some brands are quieter but the overall noise isn't caused by tyres alone.

On my vrs I've recently switched from mitchellin ps3's to four sava intensa which were the quietest I could find being rated at 67 db.

There's an obvious difference and it's almost as quiet as I think it should be around town but once you get up to speed on rough surfaces the noise is still there.

Over the coming weeks I'm going to try some sound proofing, there's loads of threads on here about it but I'm yet to find someone whos managed to come up with a solution I would be happy with.

To me the noise killer kits don't look to do a thorough enough job.

I have 17", 225x45's. The Hankook ventus12 are much quieter than the Dunlop/Bridgestone mix that was on originally.

I still think the car is too noisy when doing continental touring, ie long runs, 300 to 400 miles non stop. If the weather gets any warmer before I have to go again, I am considering the noise killer kit. It seems much cheaper to buy a whole car kit than odd pieces, even if you don't use it all.

Several people who know (engineering types, not sellers) have mentioned that just putting layers of dynamat type stuff is not cost effective. It is certainly not the path chosen by luxo barge manufacturers, who never the less manage to produce substantially quieter vehicles.

Or noise cancelling? Don't/didn't Lotus have something to do with this? Or is it just Lotus owners?

Remember to put the sticky type pads on in the summer or use a heat gun.

In this weather they will just fall off.

The inner 3/4 panels must resonate quite a lot on the Octavia so stick on anti vibration panels would work well there if you can gain access.

This is a good site as they do waterproof sound insulation (ie. for inside wheel arches which would cut tyre noise)

http://www.carinsulation.co.uk/

I'd love to know what bits I need first (please someone do it before me lol!) so I can get my car like the 7 series I had a go in quiet.

Like everyone has said over a fairly smooth road upto about 50mph it's ok but after that it lacks any sound insulation, even compared to an Astra H it's bloody noisy.

You'll never get to 7-Series levels of quietness, not without a serious, serious amount of expenditure and also added weight!

Cars like that are designed from the outset to have low levels of NVH. As said before the shape of the Octavia does lend itself to higher levels of noise at m/way speed for example.

But I would look at checking for correct wheel alignment and some 'basic' sound insulation. I recently did an 8hr 500 mile m/way trip in mine, running 225/45/17 winters (Vredstein Wintrac Extremes) and didn't have any issues or annoyances with NVH during that time. I do recognise that everyone's different though and what may be fine for me could be intolerable for someone else

I changed from the oem Bridgestones to Michelin Primacy 3's. As the Bridgestones wore they got noisier and noisier until the drone at 25-30mph was driving me mad. When they were changed there was around 3mm on the front and 4-5mm on the back (tyres swapped front to back at 10k miles). The reduction in noise is HUGE - for the first time in 25k miles I can actually hear the engine!

The rear tyres were sawtoothed on the outer edge tread blocks despite having 4 wheel alignment done at around 15k miles. My previous Octavia and my mate's both had 16" wheels and standard suspension. They never had the amount of noise I got from the combination of 17" wheels, sports suspension and Bridgestones.

Here's my writeup on the noisekiller - but like has been said - you could probably do most of it yourself off ebay (boot and underseat - even bonnet perhaps)

http://www.wastedspa...er-for-octavia/

Edited 22 February, 201313 yr by zacherynuk

I was the first person in the UK to have a Noisekiller kit installed on a Mk 2 Octavia. All others - for good or for bad - are modelled on our car.

It does cut down on engine and ambient noise - especially if you have the lead-weighted engine cover - but it does absolutely nothing for road noise. That is transmitted through the suspension and bodywork, and even if you were to soundproof the wheel arches it would still get through.

If you don't beleive me, take a trip to France and hear how quiet their road surfaces can be, even on standard Dunlops like ours.

So the answer is: find quiet tyres - and I'd be de delighted to hear of any particularly quiet ones!

John

Edited 22 February, 201313 yr by JohnMorr

but it does absolutely nothing for road noise. That is transmitted through the suspension and bodywork, and even if you were to soundproof the wheel arches it would still get through.

If you don't beleive me, take a trip to France and hear how quiet their road surfaces can be, even on standard Dunlops like ours.

So the answer is: find quiet tyres - and I'd be de delighted to hear of any particularly quiet ones!

John

I half agree with you here, concrete slab motorways are still dire - but I think the acoustics are better generally, re-verb and extreme end noises are culled meaning although still quite noisy, it's much easier for conversation between front and back, for example

French roads a a dream aren't they ? Well worth the toll.

get some dynamat it works wonders

not on reducing road noise

Regular (6 monthly) laser geometry, raised boot floor, Dynamat under the rear seats/boot/spare wheel well and Dunlop SP Sport rubber make for a pretty quiet ride on most surfaces.

I recently did an 8hr 500 mile m/way trip in mine, running 225/45/17 winters (Vredstein Wintrac Extremes) and didn't have any issues or annoyances with NVH during that time.

+1

Using the same wintrac tires now on the wheels I bought from you, I did over 1k miles in two days and no excessive noise, great tyres but you can tell the sidewalls are soft!