On Road Noise level

[Bushguide]

Has anyone seen anything concerning the On Road  noise of the Grenadier and in  particular the wind noise associated with the snorkel.?

 

[ealshamsi]

Hi Bushguide,
I had my Grenadier almost three weeks ago, so I am reviving your post because I also noticed a high air noise level while driving.
I am attaching several images showing the noise level (Showing the noise level and the car speed). I think if we are going to drive long distances on highways, it won't be comforting.
Can someone tell us what is the healthy or acceptable noise level?

 

[crimson]

I didn't notice the same level of noise on my test drive. I didn't get up to that speed though. Max was 100km/h

90dB is pretty loud.

 

[Fidei Defensor]

Over 85 dB for extended periods can cause hearing loss,,,, But I am not sure how accurate your meter is and at what freuencies this noise is. And the most important factor is the amount of time you are esposed. The 85 db limit is for constant exposure over an entire work shift, which is not the condition when driving a car..

https://www.audiology.org/wp-content/uploads/2021/05/NoiseChart_Poster-8.5x11.pdf_5399b289427535.32730330.pdf

 

[donnygreygrenadier]

From the CDC- NIOSH regarding noise exposure

 

[Fidei Defensor]

More information on niose exposure:

Understand Noise Exposure | NIOSH | CDC

The NIOSH recommended exposure limit (REL) for occupational noise exposure is 85 A-weighted decibels (dBA) over an eight-hour shift. If workers are repeatedly exposed to noise at or above the REL, employers must provide a hearing loss prevention program.

www.cdc.gov

 

[trobex]

Has anyone seen anything concerning the On Road noise of the Grenadier and in particular the wind noise associated with the snorkel.?

Not really - up to 120kms I really don't notice the snorkel making much noise, except in some situational heavy cross winds which we had recently with storms. With KO2 tires, it also seems ok and I have 2x sleeping kids half the time.

 

[ealshamsi]

Over 85 dB for extended periods can cause hearing loss,,,, But I am not sure how accurate your meter is and at what freuencies this noise is. And the most important factor is the amount of time you are esposed. The 85 db limit is for constant exposure over an entire work shift, which is not the condition when driving a car..

https://www.audiology.org/wp-content/uploads/2021/05/NoiseChart_Poster-8.5x11.pdf_5399b289427535.32730330.pdf

I am new to Noise measurement. But the noise was over the average.

 

[Fidei Defensor]

Here is an interesting chart of measurements made on various cars. It "seems" that your measurement is much higher than expected!
But remember: two factors that impact the interior noise are tires and road surface. I know that in our Audi, the noise from the tires varies a lot depending on the road surface. And AT tires are much louder!
You really need to make a continuous measurement over the whole trip to truly evaluate if the measurement you made was an exception or an average.....

 

[trobex]

Here is an interesting chart of measurements made on various cars. It "seems" that your measurement is much higher than expected!

85dB is highly unlikely in any modern car as an average generation... my old Triton was 66-68dB and it was somewhat louder than the Gren. I will have to test this tomorrow!

 

[hustlehard285]

It'd be awesome if current users could get some numbers for us on this. I'm coming from a 200 series LC and loved how quiet it was. I'm hoping the IG will be close?

 

[ealshamsi]

It'd be awesome if current users could get some numbers for us on this. I'm coming from a 200 series LC and loved how quiet it was. I'm hoping the IG will be close?

I second this suggestion.

 

[Skydance]

Hi Bushguide,
I had my Grenadier almost three weeks ago, so I am reviving your post because I also noticed a high air noise level while driving.
I am attaching several images showing the noise level (Showing the noise level and the car speed). I think if we are going to drive long distances on highways, it won't be comforting.
Can someone tell us what is the healthy or acceptable noise level?

What noise are you experiencing?

 

[FlyingTexan]

Over 85 dB for extended periods can cause hearing loss,,,, But I am not sure how accurate your meter is and at what freuencies this noise is. And the most important factor is the amount of time you are esposed. The 85 db limit is for constant exposure over an entire work shift, which is not the condition when driving a car..

https://www.audiology.org/wp-content/uploads/2021/05/NoiseChart_Poster-8.5x11.pdf_5399b289427535.32730330.pdf

Db isn’t linear. Something like 70db is twice as loud as 60.

 

[Fidei Defensor]

Db isn’t linear. Something like 70db is twice as loud as 60.

No: 3dB is double! 10 dB is 10x........

 

[trobex]

It'd be awesome if current users could get some numbers for us on this. I'm coming from a 200 series LC and loved how quiet it was. I'm hoping the IG will be close?

When the wife let's me drive it again I got a reader

 

[Tazzieman]

Noise is not an issue for me , even with RAI and a roof rack. And no , I'm not deaf!

 

[DenisM]

No: 3dB is double! 10 dB is 10x........

Correct.. it's "logarithmic" not linear

 

[Tazzieman]

You can download a decibel meter app and post results here.
In the interests of keeping this thread going as long as possible.

 

[DenisM]

85dB is highly unlikely in any modern car as an average generation... my old Triton was 66-68dB and it was somewhat louder than the Gren. I will have to test this tomorrow!

Agreed, 85dB is "bloody loud"!! and almost x10 the WH&S threshold (75dB) for mandatory Personal Protective Equipment (PPE) under local legislation....