Author Topic: Motor way noise  (Read 1547 times)

Jazz03

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Re: Motor way noise
« Reply #15 on: September 15, 2020, 10:10:05 AM »
Hi

Please see audio aound of noise inside the car.

https://easyupload.io/2xoawm

Let me know what you guys think

Thank you. I moved the phone back while driving by rear seat where noise is louder then front. It measured 80 to 95 decibels

Kenneve

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Re: Motor way noise
« Reply #16 on: September 15, 2020, 11:29:46 AM »
Very difficult to assess in home environment on computer speakers, but yes the lower frequencies seem to be much louder. 95Db would be like having a rock band playing in the car!!

However i've been out this morning and can give you the following figures

Mk3 CVT Tyres Dunlop 2030, Aircon On, fan running on 3rd notch. Location M42

Sound meter lying on front passenger seat & set to fast response Dba Scale
In car stationary engine ticking over:-  46-48 Dba
At 30 MPH   56-58 Dba
At 50 MPH   60-62 Dba
At 60 MPH   62-64 Dba
At 70 MPH   68-70 Dba

It's apparent that the major source of noise is road/tyre noise, where when coming back home over some local roads, the 30MPH result could be significantly higher.
Conversely, increasing the speed makes little difference.
The noise from car itself appears insignificant.

So I guess there is something definitely wrong with your car which needs looking at.
Can you hold a conversation in the car without raising your voice?
Hope this helps

Jazz03

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Re: Motor way noise
« Reply #17 on: September 15, 2020, 11:36:00 AM »
Thank you ever so much. I can have conversation but not comfortably i have to slightly raise my voice.

I also checked my reading at rear seat which is louder noise compared to front.

Still waiting for dealer to give me a date to check it.

May I ask what tyre brand size you're using.

Again can't thank you enough appreciate your help in this

Kenneve

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Re: Motor way noise
« Reply #18 on: September 15, 2020, 12:19:37 PM »
Normal stock Ex model tyres :-  185/55/R16  Dunlop 2030 with 9000 miles on the clock.

Jazz03

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Re: Motor way noise
« Reply #19 on: September 15, 2020, 12:21:11 PM »
Same as mine i think I got the dunlop sp sport 2030. Maybe its something else. Perhaps I should try another jazz from dealer to see if there is a difference

Happyarry

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Re: Motor way noise
« Reply #20 on: September 15, 2020, 12:32:03 PM »
Haven't collected mine yet but on the test drive I drove a fast dual carriageway which has a ribbed concrete surface. This road is so bad, neighbouring houses had to be insulated against the constant drone of traffic.

Having driven this road in many cars over the years and been deafened in the process, I can honestly say the Jazz rode it as quiet and smoothly as any.

Harry


peteo48

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Re: Motor way noise
« Reply #21 on: September 15, 2020, 12:42:04 PM »
Coming back from Yorkshire yesterday we drove over some of that concrete carriageway (A1M or a bit of the M1 I think) and the road noise was horrendous but that is the same for most cars.

This is my second Mk3 - the first one had Michelin Energy Savers and this one has the Dunlop SP2030s. The Michelins are definitely quieter but not to the degree that would explain your issues. There must be something else going on here as others have suggested.

Jazzmeister

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Re: Motor way noise
« Reply #22 on: September 15, 2020, 12:47:17 PM »
On my Mk2 the aircon fan noise from position 3 onwards is very loud, I try not to go past 2.

Kenneve

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Re: Motor way noise
« Reply #23 on: September 15, 2020, 12:48:58 PM »
Can you replicate any of my quoted figures?
What is it like when stationary with engine at tickover?

Jazz03

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Re: Motor way noise
« Reply #24 on: September 15, 2020, 01:18:09 PM »
KENNEVE thank you. Yes I will do that today and report back.

I am also going to the dealer to try another jazz to see if its different to mine with regards to the noise.

Thank you

Jazz03

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Re: Motor way noise
« Reply #25 on: September 15, 2020, 01:37:50 PM »
Tried now car stationary in quiet road with Ac at 3 at front seat passenger it read 61db then turned ac off it went down to 56db

Will try driving now and report back.

cornishpasty

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Re: Motor way noise
« Reply #26 on: September 15, 2020, 01:38:48 PM »
If the tyres are directional, maybe check on the sidewall that the direction of rotation is correct, in case the wheels have been swapped from one side to the other.

Jazz03

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Re: Motor way noise
« Reply #27 on: September 15, 2020, 02:04:58 PM »
Attached photos of the tyres. 3 are dunlop 2030 sport and 1 is hankook i.e . Left front side

Muldoon

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Re: Motor way noise
« Reply #28 on: September 15, 2020, 02:23:45 PM »
The main source for most cars is road noise / roar from the tyres particularly as speed increases and on some concrete road surfaces it's very bad. If you dismiss the tyres as they look fine and most cars have this problem to a degree depending on tyre type. It could be gaps letting noise into the cabin, perhaps a panel which isn't fitted properly - possible accident damage not repaired properly? If the bonnet or door is not fitted correctly it could cause a resonance above certain speeds like a buffeting / wind noise you describe. If sound deadening material has been left out it would also make a big difference.

Jazz03

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Re: Motor way noise
« Reply #29 on: September 15, 2020, 04:21:04 PM »
At the dealer tried another jazz and its the same. Unbearable noise. Not sure if it because the low profile alloy wheels 16. As my previous 2003 jazz was wonderful with regards to noise.

Discussing my options with dealer not sure if I should exchange it for something else.

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