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Thread: Noisy tyres

  1. #1
    Regular Member videodoctor's Avatar
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    Default Noisy tyres

    Just been in to the stealers to complain about the tyre noise that my bridgestone turanza er30's make.The guy was very pleasant and after showing him some threads from here and listening to a road test,agreed with me that they were very noisy.I am an electrician and in my job we have to take sound readings for fire alarm systems(form filling!).So i measured the sound that our Vauxhall Vivaro 1.9 diesel makes with all the tools rattling and the ladders banging on the roof.

    62db was the reading.I then measured the veccy at 40mph...guess what 62db!.

    The guy said that this would help my case with Vauxhall due to being able to write down a noise figure instead of just perceived sound.

    He said that also steel wheels(which mine are) also help resonate the sound and that alloys would be better with the new tyres.

    He's ringing Vauxhall on Monday so fingers crossed they'll listen to the main dealers and fit new tyres and alloys(i wish)

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    Regular Member Swatty's Avatar
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    Hi videodoctor, you may want to check that the freq range (set on your machine) matches what type of noise you are looking for. The setting for a fire alarm will be a high ish frequency, the tyre noise (if it is a rumble) will be low frequency. If you are testing to see if the alarm will cause problems for hearing it will be looking at a around 2kHz

    Best of luck

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    Regular Member Islander's Avatar
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    I've got Bridgestone Potenzas on my Signum the're the same VERY NOISY!

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    Regular Member videodoctor's Avatar
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    Quote Originally Posted by Swatty View Post
    Hi videodoctor, you may want to check that the freq range (set on your machine) matches what type of noise you are looking for. The setting for a fire alarm will be a high ish frequency, the tyre noise (if it is a rumble) will be low frequency. If you are testing to see if the alarm will cause problems for hearing it will be looking at a around 2kHz

    Best of luck
    The meter we use just tests general sound level.It responds to high and low frequencies and displays an analogue readout in db.

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    Regular Member videodoctor's Avatar
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    Can anyone post if they have steel wheels or alloys with their bridgestone tyres.I am just wondering if the theory of steel wheels making more noise is correct or if its just the tyres that make the noise?

    Islander,what wheels have you got?

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    Regular Member ironass's Avatar
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    [quote=videodoctor;351155]Can anyone post if they have steel wheels or alloys with their bridgestone tyres.I am just wondering if the theory of steel wheels making more noise is correct or if its just the tyres that make the noise?

    I have 18" vauxhall alloys and have recently removed potenza's with about half the tread life left in them for exactly this reason. The stealer mechanic told me it was a tyre problem and temp fitted a set of 17's from an sri and road tested it with me to prove it. As the drive was very quiet with the other tyres I went out and bought 4 new conti sports. Not cheap!! In the tyre fitters shop they showed me the wear on the inside edge of the rear tyres was uneven, one tread block seemed to be low and the next was high all around the tyre creating a "cog" effect and it was this serration causing the rumble on the road (very loud). He also told me that it is caused by incorrect camber settings for the wheel size on the rear which should have been set when the car was upgraded to 18's in the showroom. My new tyres have now started to exhibit this wear already and the noise is just starting to make an appearance, so guess where I'm off to on Monday? My car only has 20,000 on it btw. So in answer to your question, I don't think the wheel material makes much difference, I can't imagine the noise being any louder than it was with my potenza's

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    My old steelies had Bridgestone's and yes, they were very noisy. I didn't realise until i switched to alloys how noisy they were!!!

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    Regular Member Islander's Avatar
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    Quote Originally Posted by videodoctor View Post
    Can anyone post if they have steel wheels or alloys with their bridgestone tyres.I am just wondering if the theory of steel wheels making more noise is correct or if its just the tyres that make the noise?

    Islander,what wheels have you got?
    18" 11 spoke alloys

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    Regular Member Adam's Avatar
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    Cheap crappy mid-to-low end ones here. Silence

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    Here is some info on noise and comparing it to everyday sound levels we hear.

    Environmental Noise

    Normal conversation (3-5') 60-70dB
    Telephone dial tone 80dB
    City Traffic (inside car) 85dB
    Train whistle at 500' 90dB
    Subway train at 200' 95dB
    Level at which sustained exposure may result in hearing loss 90 - 95dB
    Power mower 107dB
    Power saw 110dB
    Pain begins 125dB
    Pneumatic riveter at 4' 125dB
    Jet engine at 100' 140dB
    Death of hearing tissue 180dB
    Loudest sound possible 194dB


    So I would say that your 62 dB measurement is very quiet for the inside of a car. What weighting did you use??

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